multitude vs ruck

multitude and ruck both are nouns.

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

As nouns, ruck is a hyponym of multitude; that is, ruck is a word with a more specific, narrower meaning than multitude:

Other hyponyms of multitude include hive, horde, host, legion, herd.

multitude (noun)	ruck (noun)
a large gathering of people	a crowd especially of ordinary or undistinguished persons or things
the common people generally	an irregular fold in an otherwise even surface (as in cloth)
a large indefinite quantity

multitude (verb)	ruck (verb)
	become wrinkled or drawn together