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.

Early Quenya

laisi

noun. youth, vigour, new life

Early Quenya [LT1A/Tári-Laisi; QL/052] Group: Eldamo. Published by

vána-laisi

feminine name. Vána-Laisi

A name of Vána in the earliest Lost Tales (LT1/180), a combination of her name with laisi “youth”.

Early Quenya [LT1A/Vána-Laisi; LT1I/Vána-Laisi] Group: Eldamo. Published by

tári-laisi

feminine name. Mistress of Life

Another name for Vána as the “Mistress of Life” in the earliest Lost Tales (LT1/67), a combination of tári “queen” and laisi “(new) life”.

Conceptual Development: In a very early name list of the Valar, the name was first given as Koiretári (PE14/14) using koire for “life” instead.

Early Quenya [GL/18; LT1A/Tári-Laisi; LT1I/Tári-Laisi] Group: Eldamo. Published by

laito

noun. youth, vigour, new life

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.