General terms:
* Imitation: This is the most general term, simply meaning to copy the actions, behavior, or mannerisms of another.
* Mimicry: This term emphasizes the act of copying someone else's actions or behavior, often for amusement or to make a point.
* Copying: This term focuses on reproducing something exactly, often used in the context of art or skills.
Terms with specific connotations:
* Aping: This term implies a somewhat mocking or superficial imitation, often suggesting a lack of originality.
* Parody: This term refers to an imitation that is exaggerated or humorous, often intended to make fun of the original.
* Emulation: This term implies a positive and aspirational imitation, where someone tries to improve their skills or abilities by imitating someone else they admire.
* Mirror neurons: This is a neurological term that describes the brain cells that fire both when we perform an action and when we observe someone else performing the same action. It's believed to be a key part of how we learn by imitation.
The specific term you use will depend on the specific situation and what you want to emphasize.