What is the difference between formal and informal and casual

Are informal wear, casual wear, and business wear the same? - Quora

Why do we call some clothes formal and some informal? In both cases, you're just wrapping some cloth around you. - Quora

What is the difference between a dressy dress and a casual dress? - Quora

What does the dresscode 'smart informal' mean? - Quora

What are casual dresses and formal dresses? - Quora

What clothes can be called formal/casual? - Quora

What is the difference between formal and casual black suits? - Quora

What clothes can be called formal/casual? - Quora

How do formal and informal documents differ? - Quora