commerce vs e-commerce

commerce and e-commerce both are nouns.

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

As nouns, e-commerce is a hyponym of commerce; that is, e-commerce is a word with a more specific, narrower meaning than commerce:

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

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