blemish vs flaw

blemish and flaw both are nouns.

Word	Noun	Adjective	Verb	Adverb
blemish	Yes	No	Yes	No
flaw	Yes	No	Yes	No

As verbs, blemish and flaw are synonyms defined as:

blemish (noun)	flaw (noun)
a mark or flaw that spoils the appearance of something (especially on a person's body)	an imperfection in an object or machine
	defect or weakness in a person's character
	an imperfection in a plan or theory or legal document that causes it to fail or that reduces its effectiveness

blemish (verb)	flaw (verb)
add a flaw or blemish to; make imperfect or defective	add a flaw or blemish to; make imperfect or defective
mar or impair with a flaw
mar or spoil the appearance of