featherweight vs gladiator

featherweight and gladiator both are nouns.

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

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

Other hypernyms of featherweight include prizefighter.

featherweight (noun)	gladiator (noun)
A weight class division in combat sports, for fighters heavier than those in the bantamweight division and lighter than those in the lightweight division.	(ancient Rome) a professional combatant or a captive who entertained the public by engaging in mortal combat
a professional boxer who weighs between 123 and 126 pounds	a professional boxer
weighs 126-139 pounds
an amateur boxer who weighs no more than 126 pounds