expanding upon vs increase

expanding upon and increase both are nouns.

Word	Noun	Adjective	Verb	Adverb
expanding upon	Yes	No	No	No
increase	Yes	No	Yes	No

As nouns, increase is a hypernym of expanding upon; that is, increase is a word with a broader meaning than expanding upon:

Other hypernyms of expanding upon include step-up.

expanding upon (noun)	increase (noun)
adding information or detail	the act of increasing something
	the amount by which something increases
	a change resulting in an increase
	a process of becoming larger or longer or more numerous or more important
	a quantity that is added

expanding upon (verb)	increase (verb)
	become bigger or greater in amount
	make bigger or more