Final answer:
The Nominative and Vocative cases in the 3rd declension masculine and feminine nouns singular form are: Genitive, Accusative, Dative, and Ablative cases.
Step-by-step explanation:
The Nominative and Vocative cases in the singular form for the 3rd declension masculine and feminine nouns are as follows:
1) Genitive (possessive) case: The noun ends in -i, -is, -es, -ae, or -us in the singular form.
2) Accusative (direct object) case: The noun ends in -em, -en, -os, -em, -on, or -us in the singular form.
3) Dative (indirect object) case: The noun ends in -i, -ei, -ui, -ei, or -ovi in the singular form.
4) Ablative (location) case: The noun ends in -e, -i, -u, -e, or -u in the singular form.
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