plurality vs multitude

plurality and multitude both are nouns.

Word	Noun	Adjective	Verb	Adverb
plurality	Yes	No	No	No
multitude	Yes	No	No	No

As nouns, plurality and multitude are synonyms defined as:

Other synonyms of plurality include battalion, large number, pack.

plurality (noun)	multitude (noun)
(in an election with more than 2 options) the number of votes for the candidate or party receiving the greatest number (but less than half of the votes)	a large gathering of people
a large indefinite quantity	the common people generally
the state of being plural	a large indefinite quantity