The main differences between bars and nightclubs are:

Positioning: Nightclubs are usually service venues, open until early in the morning, and mainly provide alcohol and entertainment services. Bars mainly serve alcoholic beverages and may offer light meals.

Style: There are many styles of nightclubs, which mainly provide people with the experience of eating, drinking, playing, having fun and relaxing. Bars come in many types and styles, from the most upscale "dive bars" to elegant venues that provide entertainment for society's elite.

Business model: Nightclubs are places for night entertainment, leisure and relaxation, while bars usually only serve drinks and may provide light meals.

These differences help distinguish the different characteristics of bars and nightclubs to better understand the differences between the two.