In biology, a subkingdom is one of the large units in taxonomy.

Taxonomy is the science of finding, understanding, and naming species of organisms.

This species has different characteristics depending on its subgroup.

I love biology.

I want to eat that red apple.

Akai is one of the taxonomic groups in biology, meaning subkingdom.

He ate one apple.

In this library, books are classified by genre.

He categorized the books by genre.

Please tell me the meaning of this word.