disunite vs divide

disunite is not a noun while divide is a noun.

Word	Noun	Adjective	Verb	Adverb
disunite	No	No	Yes	No
divide	Yes	No	Yes	No

As verbs, disunite and divide are synonyms defined as:

Other synonyms of disunite include part, separate.

disunite (noun)	divide (noun)
	a ridge of land that separates two adjacent river systems
	a serious disagreement between two groups of people (typically producing tension or hostility)

disunite (verb)	divide (verb)
force, take, or pull apart	perform a division
part; cease or break association with	move or break apart
	force, take, or pull apart
	make a division or separation
	separate into parts or portions
	act as a barrier between; stand between