Usage patterns
〈場所〉は東にあるto be located to the east (of somewhere)
The station is to the east of this park.
東から昇るto rise in the east (of the sun)
The sun rises in the east.
東へ向かうto head east
The train moved off heading east.
東の風が吹くan east wind blows
There's a strong east wind today.
Expressions
東入ルeast of (in Kyoto address system) 光は東からthe light comes from the East; ex oriente lux 西も東もわからないnot knowing one's way around; unfamiliar with an area · not knowing what to do; clueless