Gwas, n. servant
Gwasaeth, n. service
Gwasan, n. a youth; a page
Gwasanaeth, n. service
Gwasanaethgar, a. serviceable
Gwasanaethiad, n. a serving
Gwasanaethol, a. ministering
Gwasanaethu, v. to serve
Gwasanaethydd, n. a server
Gwasarn, n. a foundation; what is strewed; litter; booty