Sern in UT/463 is a misprint, see VT/42:11
Noldorin
gonn
noun. rock, stone (as a material)
gonn
noun. great stone, rock
gond
noun. rock
gondrafn
noun. hewn stone
gondram
noun. hewn stone
sarn
noun. stone (as a material)
sarn
noun. small stone
Sern in UT/463 is a misprint, see VT/42:11