Analyze—break down into constituent parts.
Compare—bring out points of similarity.
Contrast—bring out points of difference.
Critique—state your opinion on the correctness or merits; approval and/or disapproval.
Define—give the meaning; distinguish from similar terms or concepts.
Describe—give an account; tell about, give a word picture of.
Discuss—present different sides.
Evaluate—give the good and bad points; give an opinion about the value; discuss advantages and limitations.
Explain—tell “how to"; tell the meaning of; make clear; interpret.
Illustrate—use a word picture, diagram, chart or concrete example to clarify a point.
Interpret—give meaning of; translate.
Justify—give good reasons for; give evidence, present facts to support position; incorporate and refute opposite points of view.
Prove—establish the truth by giving factual evidence and logical reasons.
Summarize—give the main points briefly.
Trace—follow the course or trail of; give a description of progress.

Adapted from Simmons, J.M., ed. The Shortest Distance to Learning. 1983, ERIC ED 241-073: 49-58.