Gnomish
gui
adverb. just, just now, only just, already
guira-
verb. to possess
gôtha-
verb. to possess, have, hold
arn
noun. son
bo(n)
noun. son
gweg
noun. man, male of the Elda
man
masculine name. Man
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.