Gnomish
corn
noun. loaf
gaust
noun. corn, crop (espec. of cereal)
crôl
adjective. round
cauri
noun. cheese
crithiol
adjective. circular
crithog
adjective. circular
cír
noun. cheese
cûr
noun. cheese
eg
noun. point
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
A noun appearing as G. gaust “corn, crop (espec. of cereal)” in the Gnomish Lexicon of the 1910s based on the early root ᴱ√ı̯aƀa [YAɃA] (GL/38), since in Gnomish of the 1910s an initial y usually became g (HPG/§2.1).
Neo-Sindarin: Since the root ᴹ√YAB survived in Tolkien’s later writing, I would salvage this Gnomish noun as ᴺS. iaust to better fit later phonology. Furthermore, I would use it only in the sense “crop, ✱yield, produce”, where for “corn [= cereal grain]” I would use N. iau “corn” from The Etymologies (Ety/YAB).