desolation vs desolate

desolation is a noun but desolate is not a noun.

Word	Noun	Adjective	Verb	Adverb
desolation	Yes	No	No	No
desolate	No	Yes	Yes	No

desolation (noun)	desolate (noun)
an event that results in total destruction
sadness resulting from being forsaken or abandoned
the state of being decayed or destroyed
a bleak and desolate atmosphere

desolation (adjective)	desolate (adjective)
	crushed by grief
	providing no shelter or sustenance

desolation (verb)	desolate (verb)
	reduce in population
	cause extensive destruction or ruin utterly
	leave someone who needs or counts on you; leave in the lurch