A small part of a building is called an apartment. More people live in cities, so more apartments are in cities only. Some apartments are big and some apartments are small.
Large apartments are located around cities while small apartments are located in cities. Some people live in an apartment with their family, while some people live in an apartment with their brief family.
All kinds of people live in the apartment. The space is bigger in a big abartment.
Jobs, profession, businessmen live in this apartment. Due to the high population, people have difficulty in staying in the apartment, staying in the same place, eating and drinking, sleeping, getting up and sitting etc.
All the troubles have to be borne in the apartment itself. That's why a house is better than an apartment.