moustachio vs mustache

moustachio and mustache both are nouns.

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

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

moustachio: 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 moustachio include moustache.

moustachio (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