There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.

Doriathrin

-os Reconstructed

suffix. abstract ending

Apparently an abstract noun suffix appearing in the words Aros and thalos, perhaps of the same origin as the abstract endings ᴹQ. -sse and N. -as, though Helge Fauskanger suggested instead that it is related to the locative suffix ᴹQ. -sse (AL-Ilkorin/thalos).

Doriathrin [Ety/STAL; Ety/YAR] Group: Eldamo. Published by

-on Reconstructed

suffix. masculine suffix

Apparently a masculine suffix attested in the name Dairon.

Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.