渇く【かわく】
to be thirsty, to feel thirsty, to thirst for, to crave
渇き【かわき】
thirst, craving, thirst (for love, knowledge, etc.), hunger
枯渇【こかつ】
drying up, running dry, running out, being exhausted, being drained
渇水【かっすい】
water shortage
渇望【かつぼう】
craving, longing, thirsting