mustachio vs mustache

mustachio and mustache both are nouns.

Word	Noun	Adjective	Verb	Adverb
mustachio	Yes	No	No	No
mustache	Yes	No	No	No

As nouns, mustache is a hypernym of mustachio; that is, mustache is a word with a broader meaning than mustachio:

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

Other hypernyms of mustachio include moustache.

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