Differentiate teaser from trailer?

Question

Differentiate teaser from trailer?

Answer 1

a "teaser" is one who lives in a "trailer park".

Answer 2

Well, trailers are called trailers because they used to come AFTER a movie, now more commonly called previews.  A teaser is often shorter, faster, somewhat more intense, and actually reveals less about a story than a trailer does.  The Matrix had a great teaser during the superbowl way back in 1999(I think), it was some crazy fast images, that did not really make any sense, and simply a web-site to long on to.