desegregate vs segregate

desegregate is not a noun while segregate is a noun.

Word	Noun	Adjective	Verb	Adverb
desegregate	No	No	Yes	No
segregate	Yes	No	Yes	No

desegregate (noun)	segregate (noun)
	someone who is or has been segregated

desegregate (verb)	segregate (verb)
open (a place) to members of all races and ethnic groups	separate or isolate (one thing) from another and place in a group apart from others
	divide from the main body or mass and collect
	separate by race or religion; practice a policy of racial segregation