A "zav" is a man who had a non-seminal genital discharge, assumedly do to some illness. When a man has two such discharges, he must count seven days before he can go to the mikveh and become pure, however he is not obligated to bring a sacrifice unless he sees three times in one day or for three days straight. A zav and a zavah (a woman who had non-menstrual blood), a niddah and a woman who gave birth defile things by contact, by carrying and by shifting. This is true whether the pure person carries or shifts the impure person without contact or vice versa, the impure person carries or shifts the pure person. This is unique to the category of zavim for in other cases of impurity, the impurity is conveyed only if the pure person carries the impure. The following words will consistently be written in transliteration: 1) Zav—male with non-seminal genital discharge. 2) Zavah—female with non-menstrual blood. 3) Zivah—the discharge itself. 4) Zov—same as zivah.