Early Quenya
tarna
noun. passage, ford, crossing
moritarnon
proper name. Door of Night
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.
Gateway to the outer void in the earliest Lost Tales (LT1/222). Its initial element is móre “night” and its final element appears to be tarnon “door”, an otherwise unattested cognate of tarn “door”, as suggested by Christopher Tolkien (LT1A/Moritarnon).