throng vs ruck

throng and ruck both are nouns.

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

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

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

throng (noun)	ruck (noun)
a large gathering of people	a crowd especially of ordinary or undistinguished persons or things
	an irregular fold in an otherwise even surface (as in cloth)

throng (verb)	ruck (verb)
press tightly together or cram	become wrinkled or drawn together