Nouns:
* Action: The process of doing something.
* Education: The process of learning and teaching.
* Information: Facts or data about something.
* Expectation: What someone expects to happen.
* Imagination: The ability to form mental images.
* Conversation: A spoken exchange of thoughts and ideas.
* Pollution: Harmful substances in the environment.
* Celebration: An event that marks a special occasion.
* Nation: A large group of people who share a common culture and identity.
* Station: A place where trains, buses, or other vehicles stop.
Verbs:
* Mention: To briefly refer to something.
* Question: To ask a question.
* Action: To take action.
* Function: To work or operate.
* Motion: To move or to propose a suggestion.
Adjectives:
* National: Relating to a nation.
* Exceptional: Unusually good.
* Traditional: Following old customs.
These are just a few examples, and there are many more words ending in "tion" in the English language.