Girl and boy - K

A cool Bulgarian name with a unique nature meaning, although it is likely to get mispronounced in Anglophone countries.

One of the warm and earthy Russian nickname names now coming into style. Denzel Washington is the father of a Katia.

Kiana (or more appropriately, Quiana) is the original polyester name, now falling fast out of favor.

Sharp attractive short form which has a nautical translation in German: "keel" (although it isn't used as a name there).