Qenya
fantur
proper name. Lord of Cloud
olofantur
masculine name. Lord of Dream-cloud
lórien
proper name. Lórien
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 surname of Lórien as lord of dreams in Silmarillion drafts from the 1930s (LR/205). In The Etymologies it was given as a compound of olor “dream” and Fantur “Lord of Cloud”, the latter of which also appeared in the surname of his brother, Nurufantur (Ety/ÓLOS, SPAN).
Conceptual Development: The name ᴱQ. Olofantur “Fantur of Dreams” first appeared in the earliest Lost Tales, already with essentially the same meaning as above (LT1/66; QL/37, 69). This name disappeared from Silmarillion revisions from the 1950s-60s, but the term Q. Fëanturi was still used to collectively describe Mandos and Lórien.