[JohnnyZ]

there is a difference between a docent explaining museum exhibits and a college presentation.

Both give a presentation and then answer questions. Obviously they're different, because they're not the same -- but they have similarities that bear to the point of the discussion.

[From many - one.]

Wrong.

The docent simply explains the exhibits and answers questions pertaining to the exhibit; the college presentation explains a general subject and answers questions pertaining to to that.