Declension table of vaca

Neuter	Singular	Dual	Plural
Nominative	vacam	vace	vacāni
Vocative	vaca	vace	vacāni
Accusative	vacam	vace	vacāni
Instrumental	vacena	vacābhyām	vacaiḥ
Dative	vacāya	vacābhyām	vacebhyaḥ
Ablative	vacāt	vacābhyām	vacebhyaḥ
Genitive	vacasya	vacayoḥ	vacānām
Locative	vace	vacayoḥ	vaceṣu

Compound vaca -

Adverb -vacam -vacāt