handle-bars vs moustache

handle-bars and moustache both are nouns.

Word	Noun	Adjective	Verb	Adverb
handle-bars	Yes	No	No	No
moustache	Yes	No	No	No

As nouns, moustache is a hypernym of handle-bars; that is, moustache is a word with a broader meaning than handle-bars:

handle-bars: a large bushy moustache (with hair growing sometimes down the sides of the mouth)
moustache: an unshaved growth of hair on the upper lip

Other hypernyms of handle-bars include mustache.

handle-bars (noun)	moustache (noun)
a large bushy moustache (with hair growing sometimes down the sides of the mouth)	an unshaved growth of hair on the upper lip