devaluation vs decrease

devaluation and decrease both are nouns.

Word	Noun	Adjective	Verb	Adverb
devaluation	Yes	No	No	No
decrease	Yes	No	Yes	No

As nouns, decrease is a hypernym of devaluation; that is, decrease is a word with a broader meaning than devaluation:

Other hypernyms of devaluation include diminution, reduction, step-down.

devaluation (noun)	decrease (noun)
the reduction of something's value or worth	the act of decreasing or reducing something
an official lowering of a nation's currency; a decrease in the value of a country's currency relative to that of foreign countries	the amount by which something decreases
	a change downward
	a process of becoming smaller or shorter

devaluation (verb)	decrease (verb)
	decrease in size, extent, or range
	make become smaller