e-commerce vs commerce

e-commerce and commerce both are nouns.

Word	Noun	Adjective	Verb	Adverb
e-commerce	Yes	No	No	No
commerce	Yes	No	No	No

As nouns, commerce is a hypernym of e-commerce; that is, commerce is a word with a broader meaning than e-commerce:

e-commerce: commerce conducted electronically (as on the internet)
commerce: transactions (sales and purchases) having the objective of supplying commodities (goods and services)

Other hypernyms of e-commerce include commercialism, mercantilism.

e-commerce (noun)	commerce (noun)
commerce conducted electronically (as on the internet)	transactions (sales and purchases) having the objective of supplying commodities (goods and services)
	social exchange, especially of opinions, attitudes, etc.