blush vs flush

blush and flush both are nouns.

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

As nouns, blush and flush are synonyms defined as:

blush and flush: sudden reddening of the face (as from embarrassment or guilt or shame or modesty)

As nouns, blush and flush are synonyms defined as:

blush and flush: a rosy color (especially in the cheeks) taken as a sign of good health

Other synonyms of blush include bloom, rosiness.

As verbs, blush and flush are synonyms defined as:

Other synonyms of blush include crimson, redden.

blush (noun)	flush (noun)
sudden reddening of the face (as from embarrassment or guilt or shame or modesty)	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	a sudden rapid flow (as of water)
a rosy color (especially in the cheeks) taken as a sign of good health	the swift release of a store of affective force
	a poker hand with all 5 cards in the same suit
	a rosy color (especially in the cheeks) taken as a sign of good health
	sudden brief sensation of heat (associated with menopause and some mental disorders)
	the period of greatest prosperity or productivity

blush (adjective)	flush (adjective)
	of a surface exactly even with an adjoining one, forming the same plane
	having an abundant supply of money or possessions of value

blush (verb)	flush (verb)
turn red, as if in embarrassment or shame	turn red, as if in embarrassment or shame
become rosy or reddish	cause to flow through something
	rinse, clean, or empty with a liquid
	irrigate with water from a sluice
	cause to flow or flood with or as if with water
	make level or straight
	glow or cause to glow with warm color or light

blush (adverb)	flush (adverb)
	squarely or solidly
	in the same plane