smoke bomb vs smoke grenade

smoke bomb and smoke grenade both are nouns.

Word	Noun	Adjective	Verb	Adverb
smoke bomb	Yes	No	No	No
smoke grenade	Yes	No	No	No

As nouns, smoke bomb and smoke grenade are synonyms defined as:

smoke bomb and smoke grenade: a bomb that gives off thick smoke when it explodes; used to make a smoke screen or to mark a position

smoke bomb (noun)	smoke grenade (noun)
a bomb that gives off thick smoke when it explodes; used to make a smoke screen or to mark a position	a bomb that gives off thick smoke when it explodes; used to make a smoke screen or to mark a position