decrement vs decrease

decrement and decrease both are nouns.

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

As nouns, decrement and decrease are synonyms defined as:

As nouns, decrement and decrease are synonyms defined as:

decrement (noun)	decrease (noun)
the amount by which something decreases	the act of decreasing or reducing something
a process of becoming smaller or shorter	the amount by which something decreases
	a change downward
	a process of becoming smaller or shorter

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