tramper vs packer

tramper and packer both are nouns.

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

As nouns, packer is a hyponym of tramper; that is, packer is a word with a more specific, narrower meaning than tramper:

tramper: a foot traveler; someone who goes on an extended walk (for pleasure)
packer: a hiker who wears a backpack

Other hyponyms of tramper include backpacker.

tramper (noun)	packer (noun)
someone who walks with a heavy noisy gait or who stamps on the ground	a workman employed to pack things into containers
a foot traveler; someone who goes on an extended walk (for pleasure)	a wholesaler in the meat-packing business
	a hiker who wears a backpack