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.
maksa-
verb. to cook
maswa
adjective. soft, cooked, ripe
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 verb appearing as ᴱQ. maksa- “cook” in the Qenya Lexicon under the early root ᴱ√M(B)ASA “cook, bake” (QL/59). A nearby alternate form mark- was added and then deleted.
Neo-Quenya: The root √MBAS continued to appear in Tolkien’s later writings, so I would retain ᴺQ. maxa- “cook” for purposes of Neo-Quenya from primitive ✱mbaskā-. The verbal suffix -kā is very unusual, and maxa- might instead be derived from an ancient noun or adjective.