kappa — the tenth letter of the Greek alphabet (K, k).
napa — a very soft glove leather made from the skin of a sheep, kid, or goat.
nappa — a very soft glove leather made from the skin of a sheep, kid, or goat.
zappa — Frank (1940–93), US rock singer, musician, and songwriter. In 1965, he formed the Mothers of Invention, a group that combined psychedelic rock with elements of jazz and satire. In his later career he often mixed flowing guitar improvisations with scatological humor.