Simile 明喻: 将一件事物或道理指成另一件事物或道理的修辞法，该两件事物或道理中具有一些***同点，用来连接喻依和喻体的词语（如like, as, so, than,resembles)
例:He runs like a cheetah.
Metaphor 暗喻:用在比较两个好像无关事物，制造的一个修辞的转义。
例:
All the world's a stage,
And all the men and women merely players;
They have their exits and their entrances;
—William Shakespeare, As You Like It, 2/7
Analogy类比与上两者比较它更复杂一点。类比与其说是修辞手段，更多的是一种逻辑论证。
例: Flying a kite is like fishing..