featherweight vs boxer

featherweight and boxer both are nouns.

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

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

Other hypernyms of featherweight include pugilist.

featherweight (noun)	boxer (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.	a breed of stocky medium-sized short-haired dog with a brindled coat and square-jawed muzzle developed in Germany
a professional boxer who weighs between 123 and 126 pounds	someone who fights with his fists for sport
weighs 126-139 pounds	a workman employed to pack things into containers
an amateur boxer who weighs no more than 126 pounds