渇き[kawaki] thirst
渇く[kawaku] to be thirsty
渇水[kassui] water shortage
渇望[katsubou] craving
渇望者[katsubousha] desiring person

のどが渇く[nodogakawaku] to be thirsty
饑渇[kikatsu] hunger and thirst
涸渇[kokatsu] drying up
渇死[kasshi] dying of thirst
渇ごう[katsugyou] adoration