Introduction:
The primary and ancient form of language is known as the "purana rup" or the old form of language. It refers to the version of the language that was spoken or used by people in earlier times. The "purana rup" of a language is the foundation on which the modern version of the language has evolved.

Importance of the Purana Rup:
The purana rup of a language holds great significance as it forms the basis for understanding the historical and cultural aspects of a society. It helps in tracing the roots of a language and understanding the changes that have taken place over time.

Characteristics of the Purana Rup:
The purana rup of a language is characterized by several features that distinguish it from the modern form. Some key characteristics include:

1. Vocabulary: The purana rup may have a different set of words and phrases compared to the modern version of the language. Words that were commonly used in the past may no longer be in use today, and vice versa.

2. Grammar: The grammatical structure of the purana rup may differ from the modern form. Changes in verb conjugation, noun declension, and sentence construction can be observed.

3. Pronunciation: The way words were pronounced in the purana rup may vary from the modern pronunciation. This can be seen in the differences in accent, stress, and intonation patterns.

4. Writing System: The script or writing system used in the purana rup may differ from the current script. For example, the ancient form of Hindi was written in the Devanagari script, but other scripts like Brahmi and Kharosthi were used in the past.

Examples of Purana Rup:
1. Sanskrit: Sanskrit is considered one of the oldest languages and its purana rup is known as Vedic Sanskrit. The Vedic texts, including the Rigveda, are written in this form of the language.

2. Old English: Old English, also known as Anglo-Saxon, was spoken in England from the 5th to the 11th centuries. Its purana rup is quite different from Modern English, with variations in vocabulary, grammar, and pronunciation.

3. Classical Tamil: Tamil is one of the oldest languages in the world, and its purana rup, known as Classical Tamil, was used for literary and religious purposes. The ancient Tamil texts, such as the Sangam literature, were written in this form of the language.

Conclusion:
The purana rup of a language is the ancient and foundational form that has evolved over time into the modern version. It is important to study the purana rup as it provides insights into the historical, cultural, and linguistic aspects of a society. By understanding the purana rup, we can gain a deeper appreciation for the development and richness of languages.