blemish vs verruca

blemish and verruca both are nouns.

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

As nouns, verruca is a hyponym of blemish; that is, verruca is a word with a more specific, narrower meaning than blemish:

blemish: a mark or flaw that spoils the appearance of something (especially on a person's body)
verruca: (pathology) a firm abnormal elevated blemish on the skin; caused by a virus

blemish (noun)	verruca (noun)
a mark or flaw that spoils the appearance of something (especially on a person's body)	(pathology) a firm abnormal elevated blemish on the skin; caused by a virus

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