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.
oro-
verb. to rise
oro
noun. hill
oron
noun. hill
orome
masculine name. Orome
amu
adverb. up(wards)
lahta-
verb. ‽
am(u)-
prefix. up(wards)
am-
prefix. up(wards)
amba
adverb. up
ambo
noun. hill
amun Archaic
noun. hill
tahorme
noun. mountain
taorme
noun. mountain
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.