A Simile is a Comparison Using "Like" or "As".

A pure white mist crept over the water like breath upon a mirror
A. J. Cronin

His eyes skewed round to meet yours and then cannoned off again like a pool-ball.
Sean Virgo

Before she got Alzheimer's, her eyes were a crackling blue, now they were like looking into muddy water.
Joan Bauer, Rules of the Road

The water was coated with the bilge oil of numberless ships, filth that…left a black ring on the rocky walls of the fjord as though from the bath of a slovenly giant.
Tom Clancey, The Hunt for Red October

Mark's voice was like a gray steel knife.
Beverly Cleary, Fifteen

(When the old tramp) spoke, his voice was broken and simple as that of a small child.
Susan Cooper, The Dark is Rising 62

The old woman was a witch shadow - hair like matted spiderwebs, hooded `round darkness of features, eyes like glittering jewels. 
Frank Herbert Dune 3

Love is like a wind stirring the grass beneath trees on a black night.
Sherwood Anderson

(the name) ran down to him like a thick black drop sweated out from pores of stone and spores of fungus. 
Ursula LeGuin, The Wind's Twelve Quarters, 59

like a candle flame he moved in the darkness
Ursula LeGuin, The Wind's Twelve Quarters, 63

He is going to land on me like a duck on a June bug.
Margaret Mitchell, Gone with the Wind

(He) felt like a deer stepping out before the rifle of a hunter.
Piers Anthony

Her white silk robe flowed over her like a milk shower.
Harold Adams

A desolate, cratered face, sooty with care like an abandoned mining town.
Joseph Heller

(She) felt hope leak out of her heart as quickly as water was leaking into the boat.

His cheeks were like roses, his nose like a cherry!

A Metaphor is a Comparison that says something is something else.