- 不相干 bùxiānggān irrelevantto have nothing to do with each other; to be unrelated
- 毫不相干 háobùxiānggān totally unrelatedto have absolutely nothing to do with each other; completely irrelevant
- 相干性 xiānggānxìng coherencethe state or quality of being coherent; specifically used in physics to describe the correlation between waves
- 风马牛不相干 fēngmǎniúbùxiānggān totally unrelatedto have absolutely nothing to do with each other; completely irrelevant