sign or symptom

(ちょうこう) A sign that something will start soon:(Those clouds on the horizon are a sign a taiphoon is coming)
(ぜんちょう) A sign that something has already started (That slamming door means my wife has come home from work hella mad and I shouldn’t disturb her).
(えんぎ) An omen in a superstitious way (I saw a rainbow after I bet my life savings on a racehorse- that means he’ll win!) Unlike the English word ‘omen’, 縁起 can be both good and bad.
(ちょっかん)   premonition – unlike 縁起、 直感 is not based on anything. More like a hunch, but with a supernatural tinge to it. Can be bad or good.