In grammar, genitive (abbreviated ; also called the possessive case or second case) is the grammatical case that marks a noun as modifying another noun. It often marks a noun as being the possessor of another noun. However, it can also indicate various relationships other than possession: certain verbs may take arguments in the genitive case, and it may have adverbial uses ("see" Adverbial genitive). 

Placing the modifying noun in the genitive case is one way to indicate that two nouns are related in a genitive construction. Modern English typically does not morphologically mark nouns for a genitive case in order to indicate a genitive construction; instead, it uses either the "" clitic or a preposition (usually "of"). However, the personal pronouns do have distinct possessive forms. There are various other ways to indicate a genitive construction, as well. For example, many Afroasiatic languages place the head noun (rather than the modifying noun) in the construct state. 

Many languages have a genitive case, including Albanian, Arabic, Armenian, Basque, Dutch, Estonian, Finnish, Georgian, German, Greek, Icelandic, Irish, Latin, Latvian, Lithuanian, Romanian, Sanskrit, Scottish Gaelic, Tamil, Telugu, Turkish and all Slavic languages except Bulgarian and Macedonian. English does not have a proper genitive case, but a possessive ending, "’s", although some pronouns have irregular possessive forms which may more commonly be described as genitives; see English possessive.
Does more than one language have a genitive case?
Many languages have a genitive case