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.
craith
noun. circle
cruith
noun. spume
A noun appearing as ᴱN. {craith >>} cruith “spume” in Early Noldorin Word-lists of the 1920s (PE13/141); its etymology is unclear
Conceptual Development: G. craith appeared in the Gnomish Lexicon of the 1910s glossed “foam, froth, spume” (GL/26). The form G. craith “foam” also appears in Gnomish Lexicon Slips with additions to the Gnomish Lexicon (PE13/111).
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 “circle” in Early Noldorin word-lists of the 1920s derived from primitive ᴱ✶kṛkta (PE13/140).