desolation vs blight

desolation and blight both are nouns.

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

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

Other hyponyms of desolation include ruin, ruination.

desolation (noun)	blight (noun)
an event that results in total destruction	a state or condition being blighted
sadness resulting from being forsaken or abandoned	any plant disease resulting in withering without rotting
the state of being decayed or destroyed
a bleak and desolate atmosphere

desolation (verb)	blight (verb)
	cause to suffer a blight