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 Primitive Elvish

suku

root. *sweet

The root ᴱ√SUKU⁽²⁾ appeared unglossed in the Qenya Lexicon of the 1910s with derivatives like ᴱQ. suksa “sweet” and ᴱQ. sutya- “sweeten, soothe” (QL/87). A parenthetical comment indicated that ᴱ√ÐUKU might be the true root form. There are no signs of this root in Tolkien’s later writing.

Early Primitive Elvish [QL/087] Group: Eldamo. Published by

suku

root. *resin, gum

ᴱ√SUKU⁽¹⁾ appeared as an unglossed root in the Qenya Lexicon of the 1910s with derivatives like ᴱQ. súke “resinous tree, pine or fir” and ᴱQ. sulka “sticky, viscous” (QL/86-87). It had derivatives in the contemporaneous Gnomish Lexicon such as G. thuctha- “adhere to, cleave” and G. thugli “resin” (GL/73), indicating the true root form was ✱ᴱ√ÞUKU. I think it is worth positing a Neo-Root ᴺ√THUK “resin, gum” to salvage some of these early words.

Early Primitive Elvish [QL/086] Group: Eldamo. Published by

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.