Early Quenya
aldar
collective name. Aldar
alda
noun. tree, branch
aldaron
masculine name. King of Forests
i
article. the
in
article. the
orme
noun. tree
orne
noun. tree
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.
Name for the people of Galdor in an early name list (PE13/104). It seems to be simply the plural of alda “tree”.