koala bear vs Phascolarctos cinereus

koala bear and Phascolarctos cinereus both are nouns.

Word	Noun	Adjective	Verb	Adverb
koala bear	Yes	No	No	No
Phascolarctos cinereus	Yes	No	No	No

As nouns, koala bear and Phascolarctos cinereus are synonyms defined as:

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

Other synonyms of koala bear include kangaroo bear, koala, native bear.

koala bear (noun)	Phascolarctos cinereus (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