Qenya
nóla
adjective. wise, learned
nóla
noun. round head, knoll, round hilltop; summit, round head, knoll, round hilltop; summit, [ᴱQ.] top (only used of mountains etc.); crown of head
saira
adjective. wise
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 word for a type of hill, a “round head, knoll”, appearing in The Etymologies of the 1930s as a derivative of ᴹ√NDOL (Ety/NDOL).
Conceptual Development: This word was mentioned quite frequently in Tolkien’s early writings, appearing as ᴱQ. nōla “head, hill” in the Qenya Lexicon of the 1910s derived from ᴱ√NOHO “extended” (QL/67), and appearing in many word lists from the 1910s through early 1930s with glosses like “round hill” (PME/67), “head, summit” (PE15/73), “top (only used of mountains etc.)” (PE15/78), or “summit, round hilltop, head” (PE21/8). In the English-Qenya Dictionary of the 1920s Tolkien clarified that it “is not used of human head except colloquially” (PE15/73). Tolkien’s ongoing use of its cognate S. dol(l) “head, hill” in later writings indicates is ongoing validity.
Neo-Quenya: For purposes of Neo-Quenya, I would limit this word to round hills and knolls and not use it for mountain tops.