native bear vs phalanger

native bear and phalanger both are nouns.

Word	Noun	Adjective	Verb	Adverb
native bear	Yes	No	No	No
phalanger	Yes	No	No	No

As nouns, phalanger is a hypernym of native bear; that is, phalanger is a word with a broader meaning than native bear:

native bear: sluggish tailless Australian arboreal marsupial with grey furry ears and coat; feeds on eucalyptus leaves and bark
phalanger: small furry Australian arboreal marsupials having long usually prehensile tails

Other hypernyms of native bear include opossum, possum.

native bear (noun)	phalanger (noun)
sluggish tailless Australian arboreal marsupial with grey furry ears and coat; feeds on eucalyptus leaves and bark	small furry Australian arboreal marsupials having long usually prehensile tails