Sandhi is a linguistic phenomenon that occurs when two words or sounds come together, resulting in a change in pronunciation or spelling. This process is common in many languages, including Sanskrit, Hindi, and English. Sandhi helps in creating smoother transitions between words, making speech more fluid and natural. There are different types of sandhi, such as Svara Sandhi, which involves vowel changes, and Vyanjana Sandhi, which deals with consonant combinations. Understanding sandhi is essential for proper pronunciation and comprehension in languages that utilize this feature, enhancing both spoken and written communication.