| Word | Definitions | Synonyms |
|---|---|---|
| koala | (noun) sluggish tailless Australian arboreal marsupial with grey furry ears and coat; feeds on eucalyptus leaves and bark | Synonyms: kangaroo bear, koala bear, native bear, Phascolarctos cinereus |
| koan | (noun) a paradoxical anecdote or a riddle that has no solution; used in Zen Buddhism to show the inadequacy of logical reasoning | - |