Sern in UT/463 is a misprint, see VT/42:11
Noldorin
gonod-
verb. to count, count up, reckon, sum up
gonod-
verb. to count (up), reckon, sum up
gondrafn
noun. hewn stone
gondram
noun. hewn stone
gonn
noun. great stone, rock
nœdia-
verb. to count
sarn
noun. stone (as a material)
sarn
noun. small stone
Sern in UT/463 is a misprint, see VT/42:11
A verb in The Etymologies of the 1930s glossed “count up, reckon, sum up”, a combination of ᴹ√WO “together” and ᴹ√NOT “count” (Ety/NOT, WŌ). This extended verb replaced basic nod- “count” in ordinary speech; see that entry for discussion.
Conceptual Development: ᴱN. go-nod- “count” or “count up” appeared Early Noldorin Word-lists of the 1920s (PE13/132, 145, 162).