joust vs struggle

joust and struggle both are nouns.

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

As nouns, struggle is a hypernym of joust; that is, struggle is a word with a broader meaning than joust:

joust: a combat between two mounted knights tilting against each other with blunted lances
struggle: an energetic attempt to achieve something

Other hypernyms of joust include battle.

As verbs, struggle is a hypernym of joust; that is, struggle is a word with a broader meaning than joust:

Other hypernyms of joust include contend, fight.

joust (noun)	struggle (noun)
a combat between two mounted knights tilting against each other with blunted lances	strenuous effort
	an energetic attempt to achieve something
	an open clash between two opposing groups (or individuals)

joust (verb)	struggle (verb)
joust against somebody in a tournament by fighting on horseback	be engaged in a fight; carry on a fight
	to exert strenuous effort against opposition
	climb awkwardly, as if by scrambling
	make a strenuous or labored effort