noun
various differentiations; many distinctions
Rare, formal noun referring to the act or state of making many distinctions or classifying things into numerous categories. Not used in everyday conversation.
この哲学書では、存在の万別について論じている。
This philosophy book discusses the various differentiations of existence.
Compound of 万 (many, myriad) and 別 (separate, distinction). The exact historical derivation is uncertain; it is a learned Sino-Japanese term.