Qenya
lembi
collective name. Those That Lingered
lemberin
proper name. *of the Lembi
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.
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.
A term for the language(s) of the Lembi from linguistic writings of the 1930s (LR/171), also appearing as Lembarin (PE18/26), a compound of that name with the language suffix -rin.
Conceptual Development: This term did appear in some later writings (PM/30) but was ultimately replaced by Avarin.