Gnomish
ost
noun. enclosure, yard; town
ost
noun. summer
ost
pronoun. yourselves
ostrin an ost
place name. City of Seven Names
belegost
place name. *Great City
aust
noun. summer
safwen
noun. summer
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.