commerce vs stock up

commerce is a noun but stock up is not a noun.

Word	Noun	Adjective	Verb	Adverb
commerce	Yes	No	No	No
stock up	No	No	Yes	No

commerce (noun)	stock up (noun)
transactions (sales and purchases) having the objective of supplying commodities (goods and services)
social exchange, especially of opinions, attitudes, etc.

commerce (verb)	stock up (verb)
	amass so as to keep for future use or sale or for a particular occasion or use