"The man admires my grape."

Translation: Vala ñuhe avero majaqsa.

[VickoDz]

Ñuhe would be singular and "ñuhī" plural? Being both accusative...??

[xPsGoDWh]

For lunar nouns, yes.

[DrorAltshu]

what is the dif between linar and solar nouns?

[xPsGoDWh]

They are declined differently - different plural forms, different case declinations, etc. - and that affects the declination of adjectives modifying them as well. That's basically what gender does in gendered languages.