Noldorin 

ereb

adjective. isolated

Noldorin [Ety/ERE; Ety/TOL²] Group: Eldamo. Published by

ereb

adjective. isolated, lonely

Noldorin [Ety/356, S/431, UT/422, VT/42:10] Group: SINDICT. Published by

erebras

place name. Lonely Mountain

Earlier name for Erebor appearing in The Etymologies from the 1930s (EtyAC/ERE), a combination of ereb “isolated” and the lenited form of rhas “horn”.

Noldorin [EtyAC/ERE] Group: Eldamo. Published by

erebor

place name. Lonely Mountain

Noldorin [SDI1/Erebor; TI/142; TI/306; TII/Erebor; WRI/Erebor] Group: Eldamo. Published by

minei

adjective. single, distinct, unique

Noldorin [Ety/373, X/EI] Group: SINDICT. Published by