cruiserweight vs gladiator

cruiserweight and gladiator both are nouns.

Word	Noun	Adjective	Verb	Adverb
cruiserweight	Yes	No	No	No
gladiator	Yes	No	No	No

As nouns, gladiator is a hypernym of cruiserweight; that is, gladiator is a word with a broader meaning than cruiserweight:

Other hypernyms of cruiserweight include prizefighter.

cruiserweight (noun)	gladiator (noun)
A weight class division in combat sports, for fighters heavier than those in the middleweight division and lighter than those in the super heavyweight division.	(ancient Rome) a professional combatant or a captive who entertained the public by engaging in mortal combat
a professional boxer who weighs between 169 and 175 pounds	a professional boxer