tramper vs backpacker

tramper and backpacker both are nouns.

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

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

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

Other hyponyms of tramper include packer.

tramper (noun)	backpacker (noun)
someone who walks with a heavy noisy gait or who stamps on the ground	a hiker who wears a backpack
a foot traveler; someone who goes on an extended walk (for pleasure)