banding vs stretch mark

banding and stretch mark both are nouns.

Word	Noun	Adjective	Verb	Adverb
banding	Yes	No	No	No
stretch mark	Yes	No	No	No

As nouns, stretch mark is a hyponym of banding; that is, stretch mark is a word with a more specific, narrower meaning than banding:

banding: a stripe or stripes of contrasting color
stretch mark: a narrow band resulting from tension on the skin (as on abdominal skin after pregnancy)

Other hyponyms of banding include collar.

banding (noun)	stretch mark (noun)
an adornment consisting of a strip of a contrasting color or material	a narrow band resulting from tension on the skin (as on abdominal skin after pregnancy)
a stripe or stripes of contrasting color