A name for (Primordial?) Night appearing in The Etymologies from the 1930s as a derivative of the root ᴹ√PHUY, along with its (archaic?) variant Fui (Ety/PHUY).
Conceptual Development: This name is most likely a remnant of the name ᴱQ. Fui from the earliest Lost Tales, where it was another name for the goddess ᴱQ. Nienna (LT1/66, LT1A/Fui). According to the Qenya and Gnomish Lexicons from the 1910s, this earlier version of the name is derived from the root ᴱ√ǶUẎU (GL/36, QL/38).
A noun in The Etymologies of the 1930s glossed “pool” derived from the root ᴹ√LIN of the same meaning (Ety/LIN¹).
Conceptual Development: A similar word ᴹQ. linde “pool” appears in the Declension of Nouns from the early 1930s (PE21/10), but this word is probably best avoided, as it clashes with Q. lindë “singing, song” (PE17/80).