orn

noun. tree

orn

noun. (any large) tree

celegorn

masculine name. *Swift-impetuous

fangorn

masculine name. Treebeard

mallorn

noun. gold tree

tonn

adjective. tall

An adjective appearing as tond, tonn “tall” in The Etymologies of the 1930s derived from primitive ᴹ✶tundā under the root ᴹ√TUN (Ety/TUN).

Neo-Sindarin: For purposes of Neo-Sindarin, I would assume the standalone form of this word is ᴺS. tond since “nd remained at the end of fully accented monosyllables” in Sindarin (LotR/1115).

galadh

noun. tree

galadh

noun. tree

tond

adjective. tall

tonn

adjective. tall