packer vs boxer

packer and boxer both are nouns.

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

As nouns, packer and boxer are synonyms defined as:

Other synonyms of packer include bagger.

packer (noun)	boxer (noun)
a workman employed to pack things into containers	a breed of stocky medium-sized short-haired dog with a brindled coat and square-jawed muzzle developed in Germany
a wholesaler in the meat-packing business	someone who fights with his fists for sport
a hiker who wears a backpack	a workman employed to pack things into containers