Cougar is a slang term that refers to a woman who seeks sexual relations with considerably younger men.
zona - (anatomy) any encircling or beltlike structure zone anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing; he has good bone structure
Trona, an evaporite mineral, hydrated sodium bicarbonate [Na3H(CO3)2Â·2H2O], occasionally encountered as a saline lake deposit or evaporation product and as an efflorescence on arid soil.