A cinquain is a kind of unrhymed poem that has five lines. You have to count words, not syllables and stresses in a cinquain.
There are some rules how to write a cinquain.
The first line is a one-word title, the subject of the poem.
The second line is a pair of adjectives describing that title from the first line.
The third line contains three verbs related to the subject.
The fourth line contains a four-word sentence describing author’s feelings or ideas about the subject.
The fifth line is a single word - synonym (or word with close meaning) of the subject.
There is one example of a cinquain:
Snow
Silent, white
Dance, fall, melt
It covers everything around.
Flakes
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