xiāng​gān

to have to do with; relevant

相干 xiāng​gān
to have to do with; relevant adjective
to have a connection with, be concerned with, or be relevant to; often used in negative sentences or rhetorical questions
coherent
(physics) of light etc., having a constant phase relationship
coherence
(physics) the property of being coherent, as in wave interference

Frequency

Movie subtitles
0.980 per million appears in 1% of films
Written text
1.29 per million

Sources