The nose has two holes called nostrils. The nostrils and the nasal passages are separated by a wall called the septum. Deep inside your nose, close to your skull, your septum is made of very thin pieces of bone. Closer to the tip of your nose, the septum is made of cartilage, which is a flexible material that's firmer than skin or muscle. It's not as hard as bone, and if you push on the tip of your nose, you can feel how wiggly it is.

Source: Kids Health