puncher vs boxer

puncher and boxer both are nouns.

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

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

Other hypernyms of puncher include pugilist.

puncher (noun)	boxer (noun)
a tool for making holes or indentations	a breed of stocky medium-sized short-haired dog with a brindled coat and square-jawed muzzle developed in Germany
a hired hand who tends cattle and performs other duties on horseback	someone who fights with his fists for sport
someone who delivers punches	a workman employed to pack things into containers