関 (Kanji for connected to)

Onyomi

KAN

This gate connects the material world to horny heaven. Unfortunately it is guarded by Genghis KHAN.

( に ) かん ( する )

to be connected to LAZY
★★★☆☆

関係(かんけい)

related to ★★★★☆
関 (connected to) + 係 (be involved with) = 関係 (related to)

related to - a sysadmin job is コンピュータ関係

に関連している(かんれんしてる)

relevant ★☆☆☆☆
関 (connected to) + 連 (take with / inform of) = 関連している (relevant)

something that is relevant; something that seems related: two murders in the same week with both bodies' heads missing.