koala vs Phascolarctos cinereus

koala and Phascolarctos cinereus both are nouns.

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

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

koala and Phascolarctos cinereus: 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, native bear.

koala (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