cream vs skim off

cream is a noun but skim off is not a noun.

Word	Noun	Adjective	Verb	Adverb
cream	Yes	No	Yes	No
skim off	No	No	Yes	No

As verbs, cream and skim off are synonyms defined as:

Other synonyms of cream include cream off, skim.

cream (noun)	skim off (noun)
toiletry consisting of any of various substances in the form of a thick liquid that have a soothing and moisturizing effect when applied to the skin
the part of milk containing the butterfat
the best people or things in a group

cream (verb)	skim off (verb)
add cream to one's coffee, for example	pick the best
make creamy by beating	remove from the surface
remove from the surface
put on cream, as on one's face or body
beat thoroughly and conclusively in a competition or fight