bbs vs electronic bulletin board

bbs and electronic bulletin board both are nouns.

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

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

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

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

bbs (noun)	electronic bulletin board (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