A very early name of Yavanna, glossed “Earth-lady” (LT1/79) and “Mother Earth” (GL/18). It is derived from the root ᴱ√KEME “soil” (QL/46).
Early Quenya
kemi
noun. earth, soil, land
kémi
feminine name. Earth-lady, Mother Earth
kémisan
proper name. Sunday
manwisan
proper name. Sunday
poldórien
proper name. Sunday
sar
noun. earth, soil
A word for “earth, soil” in Early Qenya Word-lists of the 1920s, but it was marked with an “X” and ᴱQ. kemen (of similar meaning) was written next to it as an alternative (PE16/139).
súlisan
proper name. Sunday
An Early Qenya word derived from the root ᴱ√KEME and translated “earth, soil, land” in the Qenya Lexicon of the 1910s (QL/46) and as “earth, soil” in Poetic and Mythological Words of Eldarissa from this same period (PME/46). While this form and derivation are compatible with Tolkien later notions of the Elvish languages, I think it is better to use the later terms cemen for “earth, soil” and nór for “land”.