* Jointly: This is the most common meaning, implying that two or more things are acting together, such as "co-worker" (working together), "co-author" (writing together), or "co-operate" (working together towards a goal).
* Shared: This meaning implies a sharing of something, such as "co-ownership" (sharing ownership), "co-founder" (sharing the founding of something), or "co-location" (sharing the same location).
* Equal: This meaning implies a balance or equality between two things, such as "co-ed" (education for both genders equally) or "co-pilot" (two pilots of equal authority).
The specific meaning of "co-" will depend on the context of the word it is used in.
Here are some examples of words with the prefix "co-":
* Co-worker: A person who works with another person or people.
* Co-operate: To work together with another person or people to achieve a goal.
* Co-founder: A person who helps to start a company, organization, or project.
* Co-author: A person who writes a book, article, etc., together with another person.
* Co-dependent: Relying on another person too much for emotional support.
* Co-ordinate: To organize and arrange things so that they work well together.
* Co-exist: To live or exist together peacefully.