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.

Qenya 

héra

adjective. chief, principal, chief, principal, *main

A word for “chief, principal” in The Etymologies of the 1930s, an adjective form of ᴹQ. heru “master” under the root ᴹ√KHER “rule, govern, possess” (Ety/KHER).

Neo-Quenya: Tamas Ferencz suggested héra may also mean “✱main” in the 1000W project (1000W), for example: [ᴺQ.] héramat “main course, (lit.) chief meal”.

káno

noun. chief

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.