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

iol

noun. lamb

The word G. iol “lamb” appeared in the Gnomish Lexicon of the 1910s (GL/51), clearly a cognate of ᴱQ. eule of the same meaning from the early root ᴱ√EWE (QL/36), since eu usually became io in Gnomish. G. iolinc “little lamb, lambkin” is a diminutive form (GL/51).

Neo-Sindarin: I would adapt this word as ᴺS. ŷl “lamb” for purposes of Neo-Sindarin, since eu usually became ȳ in Sindarin.

gwenniniol

adjective. maiden(ly), girlish

A word in the Gnomish Lexicon of the 1910s appearing as {gwend(r)iol >>} gwenniniol “maiden (aj.), maidenly, girlish”, an adjectival form of {gwen >>} G. gwennin “girl” (GL/45).

elfrin(iol)

masculine name. Littleheart

Gnomish [GL/32; LT2/050; LT2/201; LT2I/Elfriniel; LT2I/Elfrith; LT2I/Ilfiniol; PE15/20] Group: Eldamo. Published by

-(i)ol

suffix. adjective suffix

Gnomish [GL/17; GL/22; GL/23; GL/24; GL/27; GL/29; GL/30; GL/32; GL/38; GL/39; GL/40; GL/42; GL/43; GL/44; GL/45; GL/46; GL/47; GL/49] Group: Eldamo. Published by

ilfrin

masculine name. Littleheart

Gnomish [GL/50; LT1A/Ilverin; LT2/050; LT2/201; LT2I/Elfriniel; LT2I/Ilfiniol; LT2I/Ilfrin; SMI/Ilfiniol] Group: Eldamo. Published by

-r(i)ol

suffix. adjective suffix

Gnomish [GL/17; GL/24; GL/25; GL/29; GL/32; GL/42; GL/48] Group: Eldamo. Published by

-(r)in

suffix. adjective suffix

Gnomish [GL/19; GL/20; GL/21; GL/22; GL/23; GL/24; GL/25; GL/26; GL/27; GL/28; GL/30; GL/32; GL/33; GL/34; GL/35; GL/36; GL/37; GL/38; GL/39; GL/40; GL/42; GL/44; GL/47; GL/48; QL/037] Group: Eldamo. Published by

-ra

suffix. adjective suffix

Gnomish [GL/18; GL/23; GL/26; GL/32; GL/35; GL/47; GL/48; LT1A/Vána] Group: Eldamo. Published by

-wed

suffix. adjective suffix

Gnomish [GL/24; GL/25; GL/26; GL/29; GL/30; GL/31; GL/33; GL/34; GL/40; GL/41; GL/42; GL/43; GL/44; GL/45; GL/49; PE13/113; PE13/114] Group: Eldamo. Published by

elfrith

proper name. Littleheart

Gnomish [GL/32; LT2/202; LT2I/Elfriniel; LT2I/Elfrith; PE13/102; PE15/20; PE15/23] Group: Eldamo. Published by

-thol Reconstructed

suffix. adjective suffix

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.