mark vs blemish

mark and blemish both are nouns.

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

As nouns, blemish is a hypernym of mark; that is, blemish is a word with a broader meaning than mark:

mark: an indication of damage
blemish: a mark or flaw that spoils the appearance of something (especially on a person's body)

Other hypernyms of mark include defect, mar.

As verbs, blemish is a hypernym of mark; that is, blemish is a word with a broader meaning than mark:

Other hypernyms of mark include deface, disfigure.

mark (noun)	blemish (noun)
something that exactly succeeds in achieving its goal	a mark or flaw that spoils the appearance of something (especially on a person's body)
an indication of damage
a marking that consists of lines that cross each other
the impression created by doing something unusual or extraordinary that people notice and remember
a number or letter indicating quality (especially of a student's performance)
a written or printed symbol (as for punctuation)
a symbol of disgrace or infamy
a distinguishing symbol
a visible indication made on a surface
a reference point to shoot at
a perceptible indication of something not immediately apparent (as a visible clue that something has happened)
a person who is gullible and easy to take advantage of
formerly the basic unit of money in Germany

mark (verb)	blemish (verb)
make or leave a mark on	add a flaw or blemish to; make imperfect or defective
insert punctuation marks into	mar or impair with a flaw
assign a grade or rank to, according to one's evaluation	mar or spoil the appearance of
celebrate by some ceremony or observation
put a check mark on or near or next to
be a distinctive feature, attribute, or trait; sometimes in a very positive sense
make underscoring marks
remove from a list
designate as if by a mark
establish as the highest level or best performance
make small marks into the surface of
mark with a scar
attach a tag or label to
notice or perceive
to accuse or condemn or openly or formally or brand as disgraceful