blemish vs ding

blemish and ding both are nouns.

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

As nouns, ding is a hyponym of blemish; that is, ding 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)
ding: an impression in a surface (as made by a blow)

blemish (noun)	ding (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)
	a ringing sound

blemish (verb)	ding (verb)
add a flaw or blemish to; make imperfect or defective	go `ding dong', like a bell
mar or impair with a flaw
mar or spoil the appearance of