mar vs dent

mar and dent both are nouns.

Word	Noun	Adjective	Verb	Adverb
mar	Yes	No	Yes	No
dent	Yes	No	Yes	No

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

mar: a mark or flaw that spoils the appearance of something (especially on a person's body)
dent: an impression in a surface (as made by a blow)

mar (noun)	dent (noun)
a mark or flaw that spoils the appearance of something (especially on a person's body)	an impression in a surface (as made by a blow)
	an appreciable consequence (especially a lessening)
	a depression scratched or carved into a surface

mar (verb)	dent (verb)
destroy or injure severely	make a depression into
make imperfect