Cocktail lounge and Watering hole

Cocktail lounge noun - A barroom in a hotel or restaurant where cocktails are served.

Watering hole and cocktail lounge are semantically related In some cases you can use "Watering hole" instead a noun phrase "Cocktail lounge".

Watering hole noun - A place of business where alcoholic beverages are sold to be consumed on the premises.

Cocktail lounge and watering hole are semantically related in club topic. You can use "Cocktail lounge" instead a noun phrase "Watering hole", if it concerns topics such as tavern, barroom, establishment serving alcohol.