Common Words:
* Adaptation: The process of changing to suit a new environment.
* Celebration: A public expression of happiness.
* Communication: The act of sharing information.
* Concentration: The act of focusing attention on something.
* Decoration: An ornament or adornment.
* Education: The process of teaching and learning.
* Explanation: A statement that makes something clear.
* Formation: The act of being created or shaped.
* Imagination: The ability to form mental pictures.
* Information: Facts or details about something.
* Innovation: A new idea, method, or product.
* Investigation: A formal inquiry into a matter.
* Location: A place where something is or happens.
* Motivation: The reason for doing something.
* Navigation: The act of finding a way through a place.
* Observation: The act of watching or noticing something.
* Organization: A group of people working together.
* Participation: The act of taking part in something.
* Preparation: The act of getting ready for something.
* Presentation: A formal talk or display.
* Realization: The act of becoming aware of something.
* Relaxation: The state of being calm and free of stress.
* Reservation: A request to hold something for you.
* Situation: The circumstances or conditions of something.
* Transformation: A complete change in appearance or character.
* Vacation: A period of time away from work for rest and relaxation.
Less Common Words:
* Acclimation: The process of becoming accustomed to a new environment.
* Agglomeration: A collection of things that have been gathered together.
* Amalgamation: The process of combining two or more things into one.
* Articulation: The act of speaking clearly.
* Assimilation: The process of being absorbed into a larger group.
* Authorization: Official permission to do something.
* Calibration: The act of adjusting an instrument to make it accurate.
* Clarification: The act of making something clear or understandable.
* Commemoration: The act of remembering or honoring something.
* Complication: A problem or difficulty.
* Consolidation: The act of combining several things into one.
* Degradation: The process of becoming worse.
* Delegation: The act of giving someone else responsibility for something.
* Denomination: A name or label.
* Depreciation: The decline in value of an asset.
* Discrimination: The act of treating someone unfairly because of their race, sex, religion, etc.
* Dissemination: The act of spreading information.
* Elaboration: The act of adding details to something.
* Emancipation: The act of setting someone free from slavery.
* Evaluation: The act of judging something.
* Exacerbation: The act of making something worse.
* Extermination: The act of killing all members of a group.
* Fabrication: The act of making something up.
* Fluctuation: The act of changing frequently.
* Formulation: The act of developing a plan or idea.
* Frustration: The feeling of being annoyed or discouraged.
* Globalization: The process of becoming worldwide.
* Graduation: The act of completing a course of study.
* Illumination: The act of providing light.
* Implementation: The act of putting something into practice.
* Implication: Something that is suggested but not stated directly.
* Incorporation: The act of becoming part of a larger group.
* Indignation: The feeling of being angry or upset about something unfair.
* Inflation: The increase in prices of goods and services.
* Instantiation: The act of creating a specific example of something.
* Integration: The act of combining different things into one whole.
* Interpretation: The act of explaining the meaning of something.
* Iteration: The act of repeating a process.
* Justification: The act of explaining why something is right.
* Legitimization: The act of making something legal or acceptable.
* Liberation: The act of setting someone free.
* Limitation: A restriction on what someone can do.
* Liquidation: The act of selling off assets to pay off debts.
* Localization: The act of adapting something to a particular place or culture.
* Magnification: The act of making something appear larger.
* Manipulation: The act of controlling someone or something.
* Materialization: The act of becoming real or visible.
* Mediation: The act of helping two sides to reach an agreement.
* Minimization: The act of making something seem smaller or less important.
* Modification: The act of changing something slightly.
* Negotiation: The act of discussing something with the aim of reaching an agreement.
* Neutralization: The act of making something harmless.
* Normalization: The act of making something normal or standard.
* Notification: The act of informing someone about something.
* Obligation: A duty or responsibility.
* Optimization: The act of making something as good as possible.
* Orientation: The act of finding your way around a new place.
* Origination: The act of starting or beginning something.
* Pagination: The process of numbering the pages of a document.
* Participation: The act of taking part in something.
* Perpetuation: The act of continuing something indefinitely.
* Polarization: The act of dividing people into two opposing groups.
* Population: The number of people living in a particular place.
* Precipitation: The act of falling rain, snow, or hail.
* Predication: The act of stating something as a fact.
* Proliferation: The rapid increase in the number of something.
* Propagation: The act of spreading something.
* Qualification: A requirement for a particular job or task.
* Quantification: The act of measuring or counting something.
* Reallocation: The act of assigning something to a different purpose.
* Reclamation: The act of taking back something that was lost.
* Reconciliation: The act of making peace after a disagreement.
* Redirection: The act of changing the direction of something.
* Regulation: A rule or law that controls something.
* Rehabilitation: The act of restoring someone to health or a normal life.
* Reiteration: The act of repeating something.
* Relocation: The act of moving to a new place.
* Renovation: The act of repairing or improving something.
* Representation: The act of speaking or acting for someone else.
* Repudiation: The act of rejecting something.
* Reservation: A request to hold something for you.
* Resignation: The act of quitting a job.
* Resolution: A formal decision made by a group of people.
* Restoration: The act of bringing something back to its original condition.
* Retaliation: The act of taking revenge.
* Revelation: The act of making something known.
* Revocation: The act of taking back something that was granted.
* Sanitization: The act of making something clean and safe.
* Satiation: The act of being fully satisfied.
* Secretion: The act of producing and releasing a substance.
* Segmentation: The act of dividing something into smaller parts.
* Selection: The act of choosing something.
* Simplification: The act of making something easier to understand.
* Simulation: The act of imitating something.
* Socialization: The process of learning how to behave in society.
* Specification: A detailed description of something.
* Speculation: The act of guessing about something.
* Stabilization: The act of making something stable or steady.
* Stimulation: The act of encouraging something to grow or develop.
* Sublimation: The act of changing from a solid to a gas without melting.
* Substitution: The act of replacing something with something else.
* Summarization: The act of giving a brief overview of something.
* Supplementation: The act of adding something to something else.
* Termination: The act of ending something.
* Transformation: A complete change in appearance or character.
* Transliteration: The act of writing something in a different alphabet.
* Translation: The act of changing something from one language to another.
* Transmission: The act of sending something from one place to another.
* Transportation: The act of moving something from one place to another.
* Utilization: The act of using something.
* Validation: The act of proving that something is true or correct.
* Verification: The act of checking that something is true or correct.
* Violation: The act of breaking a rule or law.
* Visualization: The act of forming a mental picture of something.
* Vocalization: The act of making a sound with your voice.
* Vulnerabilization: The act of making something weak or easily harmed.
This is not an exhaustive list, but it includes some common and less common words that end in "-ation."