consumer vs user

consumer and user both are nouns.

Word	Noun	Adjective	Verb	Adverb
consumer	Yes	No	No	No
user	Yes	No	No	No

As nouns, user is a hypernym of consumer; that is, user is a word with a broader meaning than consumer:

consumer: a person who uses goods or services
user: a person who makes use of a thing; someone who uses or employs something

consumer (noun)	user (noun)
a person who uses goods or services	a person who makes use of a thing; someone who uses or employs something
	a person who uses something or someone selfishly or unethically
	a person who takes drugs