Koala and Phalanger

Koala noun - Sluggish tailless Australian arboreal marsupial with grey furry ears and coat; feeds on eucalyptus leaves and bark.

Phalanger and koala are semantically related. In some cases you can use "Phalanger" instead a noun "Koala".

Phalanger noun - Small furry Australian arboreal marsupials having long usually prehensile tails.

Koala and phalanger are semantically related. Sometimes you can replace term "Koala" with "Phalanger", this nouns are similar.