domain

Definition

An area of control or knowledge; a field in which someone has expertise. Also refers to a territory ruled by a sovereign or a website's address.

日本語 ある領域の支配、知識、または専門知識、あるいは主権者が支配する領土、またはウェブサイトのアドレス

Example

"Artificial intelligence is still outside the domain of most traditional businesses."