packer vs bagger

packer and bagger both are nouns.

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

As nouns, packer and bagger are synonyms defined as:

Other synonyms of packer include boxer.

packer (noun)	bagger (noun)
a workman employed to pack things into containers	a machine for putting objects or substances into bags
a wholesaler in the meat-packing business	a workman employed to pack things into containers
a hiker who wears a backpack