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.

Gnomish

thorn

noun. eagle

Gnomish [GL/73; LT1A/Sorontur] Group: Eldamo. Published by

thorn sir

place name. Eagle-stream

Gnomish [LT2A/Thorn Sir; LT2I/Thorn-sir; PE13/105] Group: Eldamo. Published by

cristhorn

place name. Eagles’ Cleft

Gnomish [LT2/174; LT2/191; LT2A/Cristhorn; LT2I/Cristhorn; PE13/105; PE15/21; PMI/Cristhorn] Group: Eldamo. Published by

aith

noun. thorn

aithos

noun. thorn bush

A noun appearing as G. aithos “thorn-bush” in the Gnomish Lexicon of the 1910s, a combination of G. aith “thorn” and G. tath “hedge”, derived from primitive ᴱ✶eχt·taþ· (GL/18). This word also appeared in Gnomish Lexicon Slips modifying that document (PE13/108).

Neo-Sindarin: I would adapt this word as ᴺS. eithos “thorn bush” for purposes of Neo-Sindarin, since the diphthong ai was ei in non-final syllables in Sindarin of the 1950s and 60s. I would re-etymologize this word as a combination of the later words [N.] êg “thorn” (< √EK) and [N.] toss “bush”, where primitive ekt- became eith-.

Gnomish [GL/18; PE13/108] Group: Eldamo. Published by

aithr

noun. thorn, †sword

pibinaith(ros)

noun. hawthorn

A word for “hawthorn” in the Gnomish Lexicon of the 1910s, apparently a combination of G. pibin “small berry, haw” and a variant of G. aithos “thorn bush” (GL/64). Another word of “hawthorn” in this document was G. tadhos (GL/68).

tadhos

noun. hawthorn

A noun appearing as G. tadhos “hawthorn” in the Gnomish Lexicon of the 1910s, an elaboration of G. tath (tadh-) “hedge” based on the early root ᴱ√tadh- (GL/68).

Neo-Sindarin: I would retain ᴺS. tadhos “hawthorn” based on an updated Neo-Root ᴺ√TAD “enclosure”; see that entry for details.

pinaithros

noun. hawthorn

aith

noun. sword

Gnomish [GL/18; GL/31; PE13/109] Group: Eldamo. Published by

aithi Archaic

noun. sword

aithwen

noun. sword

ectha

noun. sword

Gnomish [GL/18; GL/31; GL/32] Group: Eldamo. Published by

engan

noun. spear

ior Archaic

noun. eagle

An archaic word for “eagle” in the Gnomish Lexicon of the 1910s, related to ᴱQ. ea(r) of the same meaning (GL/51), though the exact correspondence (and sound changes) are not clear.

Gnomish [GL/51; LT1A/Eärendel] Group: Eldamo. Published by

ioroth

noun. eagle

A word for “eagle” in the Gnomish Lexicon of the 1910s, an elaboration of archaic G. †ior “eagle” of the same meaning (GL/51).

Gnomish [GL/51; LT1A/Eärendel] 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.