This video explains the Chomsky Type 2 Grammar for Context-free languages (recognized by non-deterministic pushdown automata) and Type 3 Grammar for Regular languages (recognized by finite-state automata).
Link for Chomsky Hierarchy and Type 0 Grammar: • Chomsky Hierarchy and Type 0 Grammar ...
Link for Type 1 Grammar for Context-sensitive languages: • Type 1 Grammar - Chomsky Classificati...