Koast

Koast is a modern spelling of Coast, the English word for land along the sea. A coast can include cliffs, beaches, tidal marshes, or rocky shores, so the name's image is broader than a sandy holiday beach. The ordinary word gives it a clear geographical meaning without needing an older surname or a translated phrase.

Choosing K in place of C changes the appearance while keeping the coastal association easy to recognize. For a family, the name might recall a particular stretch of shoreline or a place where they have lived. Coast remains the conventional spelling of the word; Koast makes the personal-name spelling distinct while leaving that connection with the meeting of land and water intact.