You could argue the same about other types of buildings too. You are going to a restaurant, a McDonald's, a Cafe, a Taco Bell, a bar that also serves food and so on. People make a distinction between those when they are all places to eat food. Sure the food differs, the way you interact with the staff too etc. But they all serve the same core purpose, yet people call them different things. The same way, people go to different places of worship for different faiths, with different expected behaviors and building designs