noun
General noun for a category or variety of things. Often used in compounds like 各種 (various kinds) or 一種 (one kind).
この種の問題はよく起こる。
This kind of problem often occurs.
あの種の人は苦手だ。
I'm not good with that type of person.
noun
Biological term for a species. Also used in compounds like 絶滅危惧種 (endangered species).
この島には固有種が多い。
This island has many endemic species.
noun
Abbreviation of 種概念 (species concept) in logic. Rare outside philosophical contexts.
See also: 種概念
論理学で「種」は類に対する下位概念を指す。
In logic, 'species' refers to a subordinate concept relative to a genus.