bang vs hair style

bang and hair style both are nouns.

Word	Noun	Adjective	Verb	Adverb
bang	Yes	No	Yes	Yes
hair style	Yes	No	No	No

As nouns, hair style is a hypernym of bang; that is, hair style is a word with a broader meaning than bang:

Other hypernyms of bang include coif, coiffure, hairdo, hairstyle.

bang (noun)	hair style (noun)
a conspicuous success	the arrangement of the hair (especially a woman's hair)
a border of hair that is cut short and hangs across the forehead
a sudden very loud noise
a vigorous blow
the swift release of a store of affective force

bang (verb)	hair style (verb)
strike violently
close violently
leap, jerk, bang
have sexual intercourse with
move noisily
to produce a sharp often metallic explosive or percussive sound

bang (adverb)	hair style (adverb)
directly