exa adj.? "other" (apparently as adjective) (VT47:10, VT49:33). Also eces ("k"), unless this is intended as the stem underlying exa (the root KES with prefixed stem-vowel) rather than a Quenya word (VT49:33).
Quenya
hyana
other
hyana
adjective. other
exa
other
exa
adjective. other
hyana adj. "other", cf. hya (VT49:14)