Keyword
connected to
Info
FrequencyTop 100-200
Type
Kyōiku (4th grade) 
?
Shinjitai ?
KankenLevel 7
Heisig2173
Old form
Readings
かん
(86%)
かか
(11%)
せき
(2%)
Composed of
gate
horns
heaven
Mnemonic

It's a gate that is connected to both heaven and hell through a pair of demonic horns.

Used in vocabulary (643 in total)
relation; relationship; participation; involvement; influence; effect
unrelated; irrelevant; unconcerned; unconnected
to be affected; to be influenced; to be concerned with; to have to do with; to stick to (opinions)
Examples (200 in total)
Everything is connected.
That has nothing to do with me.
What he says has nothing to do with this problem.