rhyme /raim/ I. n. u&c]押韵;押韵词:nursery rhyme儿歌,童谣;imperfect rhyme不完全韵(love, move, phase, race )‖II. vt. & vi.(使)押韵:balloon rhymes with moon.balloonmoon押韵。The poem would have been better if it rhymed.这首诗如果能成韵的话就更好了。 

rhythm /ˈriðəm/ n. 1.c]节奏: the rhythm of music(dancing) 音乐(跳舞)的节奏/拍;the rhythm of one’s heartbeat 心跳的节奏 2.u]韵律: the rhythm of poems and songs 诗歌的韵律