Final answer:
Free verse uses metrical patterns and occasional rhyme, but it doesn't use strict rhyme or meter.
Step-by-step explanation:
Free verse does, at times, draw on metrical patterns and occasional rhyme to tie lines together. What distinguishes free verse from other traditional forms of verse is that it only uses these elements occasionally for a few lines here and there in a longer poem—and does not use them to structure the poem as a whole. A poem in free verse, then, does not lack structure—or, in many cases, some instances of metrical organization or rhyme—it simply does not maintain or use a regular pattern of meter or rhyme to structure the poem as a whole. Instead, free verse relies more on thematic, syntactic, or semantic repetition and development to create coherence.