How many kinds of bars are there?

Lounge: Lounge is usually located in a five-star hotel or as part of a high-end restaurant, where diners or guests drink aperitif or digestif (a lifestyle of upper class).

Palour, or cigar bar: This cigar bar is different from Lounge. It can smoke. It was originally a place where gentlemen received guests in a mansion. Later, after the increase of polo clubs and yacht clubs, it became a place for private clubs to have a drink.

Cocktail Bar: Formal cocktail bars (except speakeasy) are not allowed to be too casual by default. In the United States, having a happy hour is actually part of an informal dinner after work, especially in the cocktail bar of the hotel, which will remind you of the dress code and it is best to wear something chic.

2. Informal

Sports bar: In Britain, a place where people drink beer during a football match.

English pub: It's similar to the last one, but it prefers beer here.

Underground bar: an underground bar in the United States during the prohibition period, and later also refers to a bar style.

Nightclub: Nightclub