border

(earth) + (stand up) + (look)
★★★☆☆
14 strokes

Onyomi

KYOU

as in, "Today's ( = 今日, pronounced KYOU) border will vanish tomorrow, when The Man starts his next war." Ooh, political!!

Mnemonic

If you stand on the earth over there, you can see all the way to the border

Kunyomi

さかい boundary - can be used with countries OR property lines of 2 pieces of land. Usually used when talking about crossing a boundary, or being within the boundary.
★☆☆☆☆

Jukugo

環境(かんきょう)

environment ★★★☆☆
(environment) + (border) = 環境 (environment)

environment (like English, this is not limited to nature. A bad kid can be a "product of his environment.")

国境(こっきょう)

national border ★★☆☆☆
(country) + (border) = 国境 (national border)

境界(きょうかい)

boundary ★★☆☆☆
(border) + (the world) = 境界 (boundary)

means border or boundary of property (80% the same usage as さかい (境) , but a bit more formal).

BOTH 境 and 境界 are often used in the figurative sense - like "This film pushes the envelope of good taste" or "His art blurs the boundary between painting and sculpture".

Also used in science.

Lookalikes

Meaning Hint Radical
border EARTH
mirror METAL

The border is a line on EARTH but the mirror is made of METAL.

Synonyms

border, edge
国境    境    境界    縁    端    末    先    外れ    際