Early Noldorin
barth
noun. world, earth
am(m)arth
noun. fate
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.
An Early Noldorin word from the 1920s glossed “world” in the Early Noldorin Grammar (PE13/120) and “earth” Early Noldorin Wordlists of the 1920s (PE13/138). Its mutations in the Early Noldorin Grammar make it clear anciently began with mb-, so it was probably derived from the early root ᴱ√MBARA “dwell, live” (QL/63).