What is the difference between an analogy, simile, and a metaphor?

Answer 1

metaphor - saying something IS something else.
ex: Sarah is a tornado. (assuming Emily is actually a person, not REALLY a tornado)

simile - saying something is LIKE something else:
ex: Sarah is like a tornado.

analogy - basically an extended simile, where you keep going with the same idea of a comparison
ex.: Sarah is like a tornado, she sweeps through a room and crushes everyone's self-esteem like so many mobile homes in a trailer park, and then she disappears without a trace and leaves the people to pick through the ruble and try to rebuild.

Answer 2

a similie is likening something to another thing and they have to have some similar points and you use a word such as (as,like,...) to show the similarity
e.g
he is like a lion.

a metaphor is like similie but you don't use any words like (as,like...) to show the similarity
e.g
he is a lion.

an analogy is when you compare a hard,not clear thing to another one which is easier for the reader to understand to make the hard thing understandable and there is no rational,obvious point of similarity between them
e.g you compare a bad friend to a smelly sock.