Act: Some thing that somebody does. The action of carrying something out.
Active: Moving about working, or doing something, and not resting or sleeping.
Add: Something into or join something onto something else.
Analyze: To examine something in great detail in order to understand it better or discover more about it.
Answer: The information requested by a spoken or written question. A reaction intended to deal with something that somebody says or does.
Approximate: Similar in nature, appearance, or characteristics to something else.
Ask: To communicate with somebody in order to get information.
Apply: To make a formal, usually written, request for something.