noun, noun which may take the genitive case particle 'no'
three kinds; three varieties
Used to refer to three distinct types or categories of something. Often appears in compound terms like 三種混合 (triple combination) or 三種の神器 (the Three Sacred Treasures).
この店では三種のチーズを取り扱っています。
This shop carries three kinds of cheese.
三種混合ワクチンを接種した。
I received the triple combination vaccine.