electronic bulletin board vs bbs

electronic bulletin board and bbs both are nouns.

Word	Noun	Adjective	Verb	Adverb
electronic bulletin board	Yes	No	No	No
bbs	Yes	No	No	No

As nouns, electronic bulletin board and bbs are synonyms defined as:

electronic bulletin board and bbs: a computer that is running software that allows users to leave messages and access information of general interest

Other synonyms of electronic bulletin board include bulletin board, bulletin board system.

electronic bulletin board (noun)	bbs (noun)
a computer that is running software that allows users to leave messages and access information of general interest	a computer that is running software that allows users to leave messages and access information of general interest