stock up vs commerce

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

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

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

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