*Incident*: an event that has taken place. The robbery incident claimed lives.
*Incidence*: the rate at which an event occurs: In West Africa, the incidence of sickle cell is about 25 percent.
*Haunt*: disturb: She’s haunted by the fear of failing her examination.
*Hunt*: to look for; to seek: I used to hunt antelopes when I was young.
GAB