also: かっけん
noun
each prefecture; every prefecture
Refers to all prefectures individually, often used in contexts like surveys, statistics, or comparisons across prefectures.
各県の人口を比較する。
Compare the population of each prefecture.
各県に一つずつ国立大学がある。
There is one national university in each prefecture.
Refers to all prefectural-level divisions collectively (Tokyo, Hokkaido, Osaka/Kyoto, and other prefectures), while 各県 specifically means each prefecture (excluding Tokyo, Hokkaido, Osaka, and Kyoto).
Compound of 各 (each) and 県 (prefecture).