blemish vs whitehead

blemish and whitehead both are nouns.

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

As nouns, whitehead is a hyponym of blemish; that is, whitehead 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)
whitehead: a small whitish lump in the skin due to a clogged sebaceous gland

blemish (noun)	whitehead (noun)
a mark or flaw that spoils the appearance of something (especially on a person's body)	a small whitish lump in the skin due to a clogged sebaceous gland

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