joust vs tournament

joust and tournament both are nouns.

Word	Noun	Adjective	Verb	Adverb
joust	Yes	No	Yes	No
tournament	Yes	No	No	No

joust (noun)	tournament (noun)
a combat between two mounted knights tilting against each other with blunted lances	a sporting competition in which contestants play a series of games to decide the winner
	a series of jousts between knights contesting for a prize

joust (verb)	tournament (verb)
joust against somebody in a tournament by fighting on horseback