Eruman place-name; this is a word to which various meanings are ascribed, but it always denotes some region. In the earliest phases of Tolkien's mythology, it was a region south of Taniquetil (LT1:91, 252-253). In the Etymologies, entry ERE, Eruman is a "desert north-east of Valinor". In the final version of the Quenya Lord's Prayer, where the locative form Erumandë appears, Tolkien appears to have moved Eruman out of this world entirely, making it the abode of God (Eru); Erumandë translates "in heaven".
Quenya
erumë
desert
Eruman
desert north-east of valinor
erda
solitary, deserted
erda adj. "solitary, deserted" (LT1:269)
erda
adjective. solitary, deserted
ravanda
wilderness
?ravanda noun?, a form cited by Tolkien to elucidate the Noldorin word rhofan "wilderness"; it is not clear whether ravanda is meant as a Quenya cognate or just as an etymological (Old Noldorin?) form (VT46:10)
hravanda
noun. wilderness
erumë noun "desert" (ERE)