Gnomish
gwareth
noun. watch, guard, ward; vigilance
amon gwareth
place name. Hill of Watch
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.
A noun in the Gnomish Lexicon of the 1910s glossed “watch, guard, ward” based on the verb G. gwar- “watch” (GL/46-47), also translated “vigilance” in the Name-list to the Fall of Gondolin (PE15/27). Its most notable use is in the name Amon Gwareth “Hill of Watch” (LT2/158) which survived into The Silmarillion as published but without translation in Tolkien’s later writings (S/126; WJ/200).