No, it is 'generations'.

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generations of programming languages

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Programming languages are divided into five different generations. A programming language consists of the symbols, letters and numbers used to communicate with computers.

Programming is a term that describes the usage of a programming language.

Programming languages (C++ for example) are languages that create programs, these programming languages should not be confused with scripting languages.

Scripting languages are languages that are meant to be interpenetrated by programs. (Written in a programming language)

The major advantages of fifth generation programming languages are that these languages are improved from fourth generation languages.

It is also important to note that classification of programming languages in generations beyond the second generation is complete nonsense and nothing but a marketing hype; programming languages don't evolve in a linear succession, or one in the shape of a balanced tree, where each generation has common attributes and improvements over the previous generation.