versification vs rhyme

versification and rhyme both are nouns.

Word	Noun	Adjective	Verb	Adverb
versification	Yes	No	No	No
rhyme	Yes	No	Yes	No

As nouns, rhyme is a hyponym of versification; that is, rhyme is a word with a more specific, narrower meaning than versification:

versification: the form or metrical composition of a poem
rhyme: correspondence in the sounds of two or more lines (especially final sounds)

Other hyponyms of versification include poetic rhythm, prosody, rhythmic pattern, rime, isosyllabism.

versification (noun)	rhyme (noun)
the art or practice of writing verse	correspondence in the sounds of two or more lines (especially final sounds)
the form or metrical composition of a poem	a piece of poetry
a metrical adaptation of something (e.g., of a prose text)

versification (verb)	rhyme (verb)
	compose rhymes
	be similar in sound, especially with respect to the last syllable