koala vs native bear

koala and native bear both are nouns.

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

As nouns, koala and native bear are synonyms defined as:

koala and native bear: sluggish tailless Australian arboreal marsupial with grey furry ears and coat; feeds on eucalyptus leaves and bark

Other synonyms of koala include kangaroo bear, koala bear, Phascolarctos cinereus.

koala (noun)	native bear (noun)
sluggish tailless Australian arboreal marsupial with grey furry ears and coat; feeds on eucalyptus leaves and bark	sluggish tailless Australian arboreal marsupial with grey furry ears and coat; feeds on eucalyptus leaves and bark