goat antelope: bovid related to goats but having antelope-like features: mountain goats; gorals; serows; chamois; gnu goats
bovid: hollow-horned ruminants
potassium: a light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite