Middle Primitive Elvish
nan
root. *mother
am
root. mother
amī̆l
noun. mother
lūme
noun. time
tatharē
noun. willow-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.
A (Noldorin only?) root in The Etymologies of the 1930s serving as the basis for a couple Noldorin mother words: N. naneth “mother” and N. nana “mother (hypocoristic)” (Ety/NAN).