Sern in UT/463 is a misprint, see VT/42:11
Noldorin
sarn
noun. stone (as a material)
sarn
noun. small stone
sarn
noun/adjective. stone as a material
argonath
place name. King Stones
ceber
noun. stake, spike, stone ridge
gondrafn
noun. hewn stone
gondram
noun. hewn stone
gonn
noun. great stone, rock
sarn athrad
place name. Stony Ford, Ford of Stones
sarn gebir
place name. ?lone stone, Stand[?ing stones], [?Lime]stones
sarn ruin
place name. Sarn Ruin
Earlier name of S. Sarn Gebir in Lord of the Rings drafts from the 1940s (TI/366). Its initial element is sarn “stone”, but the meaning of its second element is unclear. Some possibilities were suggested by Roman Rausch (EE/2.39, 2.40).
sern aranath
place name. King Stones
Sern in UT/463 is a misprint, see VT/42:11