A word in the Declension of Nouns from the early 1930s with stem form hun- and gloss “earth” (QL/39). It might be a later iteration of ᴱQ. han “ground, earth” from the Qenya Lexicon of the 1910s (QL/39), and if so then hún might also be used as “✱ground”. I think it is useful to assume so for purposes of Neo-Quenya, as the other attested word for “ground”, Q. talan, is probably used more often for “floor”, including floors above the ground level.
Qenya
kemen
noun. soil, earth; Great Lands
kén
noun. soil, earth
kemnaro
noun. potter
kentano
noun. potter
hún
noun. earth, earth, *ground
@@@ if used in Neo-Quenya, it would need to be updated to centamo