mousse vs neaten

mousse is a noun but neaten is not a noun.

Word	Noun	Adjective	Verb	Adverb
mousse	Yes	No	Yes	No
neaten	No	No	Yes	No

As verbs, neaten is a hypernym of mousse; that is, neaten is a word with a broader meaning than mousse:

Other hypernyms of mousse include groom.

mousse (noun)	neaten (noun)
toiletry consisting of an aerosol foam used in hair styling
a light creamy dish made from fish or meat and set with gelatin
a rich, frothy, creamy dessert made with whipped egg whites and heavy cream

mousse (verb)	neaten (verb)
apply a styling gel to	care for one's external appearance
	put (things or places) in order