noun, noun which may take the genitive case particle 'no'
vocative case
Grammatical term for the case used when directly addressing someone or something. In Japanese, this is often marked by the particle よ or by context, rather than a distinct morphological form.
ラテン語には呼格という格がある。
Latin has a case called the vocative.
日本語では、呼格の代わりに「よ」を使うことがある。
In Japanese, 'yo' is sometimes used instead of the vocative case.