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.

Middle Primitive Elvish

oron

root. high tree

A root mentioned in several places in The Etymologies of the 1930s: as {ᴹ√ORÓN >>} ᴹ√ÓRON under the entry for ᴹ√NEL (EtyAC/NEL) and as {ᴹ√ÓR-ON >>} ᴹ√ÓR-NI “high tree” under the entry for ᴹ√ORO “up, rise”, an extension of that root (Ety/ORO; EtyAC/ORO). In the latter entry ᴹ√ÓR-NI was the basis for ᴹQ. orne/N. orn “(high isolated) tree”. The root itself does not appear in Tolkien’s earliest writings, but G. orn “tree” dates all the way back to the Gnomish Lexicon of the 1910s, though there its Qenya cognate was ᴱQ. orond- “bush” (GL/62). The primitive form ᴱ✶orne- appeared in the Noldorin Dictionary from the 1920s with derivatives ᴱQ. orne/ᴱN. orn “tree” (PE13/164), and primitive ✶ornē continued to appear in Tolkien’s writings in the 1940s, 50s and 60s (SD/302; PE17/113; UT/266), its last mentioned being in a 1972 letter to Richard Jeffery, where it was again given as an extension of √OR/RO (Let/426). It was thus a very enduring idea.

Middle Primitive Elvish [Ety/NEL; EtyAC/NEL; EtyAC/ORO] Group: Eldamo. Published by

galadā

noun. tree

Middle Primitive Elvish [SD/302] Group: Eldamo. Published by

galad

root. tree

The basis for Elvish “tree” words, this root first appeared in The Etymologies of the 1930s as an extension of ᴹ√GALA “thrive” (Ety/GALAD). This replaced the earliest derivation of “tree” from the Qenya Lexicon of the 1910s, where the Qenya word for “tree” ᴱQ. alda was derived from ᴱ√ALA “spread” (QL/29). In The Etymologies, the Quenya form of this word remained the same, but the 1910s Gnomish words G. âl “wood” and †alwen “tree” (GL/19) became the 1930s Noldorin word N. galadh “tree” (Ety/GALA). Quenya and Sindarin retained these words for “tree” thereafter, and while Tolkien did not mention the root √GALAD again, his continued use of primitive ✶galadā “tree” (Let/426; PE17/153; PE21/74; UT/266) made it clear this root remained valid.

Middle Primitive Elvish [Ety/BERÉTH; Ety/GALA; Ety/GALAD; Ety/NEL; EtyAC/GALAD] Group: Eldamo. Published by

tussā

noun. bush

Middle Primitive Elvish [Ety/ÓR-NI; Ety/TUS] 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.