the central part of a country, historically, commonly known as the capital city or the main region, where an emperor or other ruler resides / something within a country

Short for 中国地方 (Chūgoku chihō): the Chūgoku region of Japan

a surname

a target, a mark, a bullseye / an objective, an object (of doing something)

as far as ... is concerned; in terms of ...

impossible to understand, utterly confused

(computing) machine learning

a cram school

deep learning

learning disability