(a) The possessive case of the noun denotes possession.
(b) Nouns in the nominative case are used as follows:—
1. As the subject of a verb: [The western sky is all aflame]
2. As an attribute complement: [Autumn is the most gorgeous season of the year].
3. In an exclamation: [Alas, poor soul, it could not be!].
4. In direct address: [O hush thee, my baby!].
5. Absolutely: [The rain being over, the grass twinkled in the sunshine].
6. As a noun in apposition with a nominative: [Columbus; a native of Genoa, discovered America].
(c) Nouns in the objective case are used as follows:—
1. As the direct object of a verb, termed either the direct object or the object complement: [I saw a host of golden daffodils].