What are Tatsam and Tadbhav words?

Tatsam vs Tadbhav Words in Hindi:

• Tatsam Words ('Tat' + 'Sam' = like that): Sanskrit words imported directly into Hindi without any phonetic alteration (e.g., अग्नि, सूर्य, दुग्ध, दंत)।
• Tadbhav Words ('Tat' + 'Bhav' = born from that): Words derived from Sanskrit that have evolved phonetically over time in Prakrit/Hindi (e.g., आग, सूरज, दूध, दांत)।
• Significance: Rich vocabulary source enriching modern Hindi prose.