fern

noun/adjective. dead (of mortals)

fern

noun/adjective. dead (of mortals)

fern

noun/adjective. dead person

brethel

noun. beech, beech-tree, silver birch

brethel

noun. beech

brethil

noun. beech

fêr

noun. beech-tree

fêr

noun. beech-tree

A word for “beech-tree” in The Etymologies of the 1930s derived from the root ᴹ√PHER(EN) “beech” (Ety/PHER). Tolkien said that “Exilic fêr was usually replaced by brethil”, indicating that fêr was probably archaic. In The Etymologies, N. brethil was “beech-tree” (Ety/BERÉTH).

Neo-Sindarin: In Tolkien’s later writings, he typically said S. brethil was a type of silver-birch. I would assume the ordinary Sindarin word for “beech” was instead neldor (LotR/469; RC/384), but would keep †fêr as an archaic word for “beech”.