Gnomish
sîr
noun. river
aidlan
noun. today
ain
noun. today
aina
noun. today
ainan
noun. today
aindana
noun. today
aindanathon
adjective. today
duif
noun. stream
sinnai
noun. today
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.