The Dravidian languages form a distinct language family, unrelated to other major language families such as Indo-European or Sino-Tibetan.

There are approximately 72 Dravidian languages spoken today, with the majority of them found in South India.

Telugu is the Dravidian language with the largest number of speakers, with over 80 million native speakers primarily located in the state of Andhra Pradesh, India.

The earliest known Dravidian inscription is the Tamil-Brahmi Script, dating back to the 3rd century BCE, found in Tamil Nadu, India.

Tamil is considered to be the most conservative Dravidian language, having retained many of its original features and exhibiting a relatively slow rate of change over time.

Lexical borrowing is the process by which Dravidian languages have adopted words from other languages, particularly from Sanskrit and Persian.

Telugu has been influenced the most by Sanskrit due to its geographical proximity to the Indo-Aryan languages and its long history of interaction with Sanskrit-speaking cultures.

Lexical diffusion refers to the process by which Dravidian languages have influenced other languages, particularly in South and Southeast Asia.

Tamil has influenced Southeast Asian languages the most due to its historical role as a language of trade and cultural exchange in the region.

Sound shift refers to the process of regular and predictable changes in the pronunciation of sounds over time, leading to the evolution of new sounds and the loss of old ones.

Kannada's Law is a sound shift that occurred in the Dravidian languages, resulting in the change of certain consonants in specific positions.

Grammatical change refers to the process of evolution in the grammatical structures and syntactic patterns of a language over time.

The development of tense-aspect markers is a grammatical change that occurred in the Dravidian languages, resulting in the emergence of distinct markers to indicate tense and aspect.

Semantic change refers to the process of evolution in the meaning of words and phrases over time, leading to shifts in their connotations and associations.

The development of new meanings for old words is a semantic change that occurred in the Dravidian languages, resulting in the emergence of new meanings for existing words.