impulse-buy vs commerce

impulse-buy is not a noun while commerce is a noun.

Word	Noun	Adjective	Verb	Adverb
impulse-buy	No	No	Yes	No
commerce	Yes	No	No	No

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

impulse-buy (verb)	commerce (verb)
buy on impulse without proper reflection