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.
mar
noun. Earth, ground, soil
mar(o)n
adjective. ripe
ôla mar
masculine name. Ôla Mar
bara dhair haithin
place name. Cottage of the Lost Play
famfa-
verb. to maul
A verb in the Gnomish Lexicon given as {fampa- >>} famfa- “maul”, an elaboration of G. famp “feeling, stroking” (GL/33).
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 in the Gnomish Lexicon of the 1910s glossed “Earth, ground, soil”, apparently derived from the root ᴱ√mar- (GL/56). Tolkien also had G. Môr “the Earth”, so perhaps mar mainly meant “earth” in the more ordinary senses. For purposes of Neo-Eldarin, I’d use later S. ceven for “earth”.