blush vs blusher

blush and blusher both are nouns.

Word	Noun	Adjective	Verb	Adverb
blush	Yes	No	Yes	No
blusher	Yes	No	No	No

As nouns, blush and blusher are synonyms defined as:

blush and blusher: makeup consisting of a pink or red powder applied to the cheeks

Other synonyms of blush include paint, rouge.

blush (noun)	blusher (noun)
sudden reddening of the face (as from embarrassment or guilt or shame or modesty)	makeup consisting of a pink or red powder applied to the cheeks
makeup consisting of a pink or red powder applied to the cheeks	yellowish edible agaric that usually turns red when touched
a rosy color (especially in the cheeks) taken as a sign of good health

blush (verb)	blusher (verb)
turn red, as if in embarrassment or shame
become rosy or reddish