Twenty plus years ago when I entered the cancer world I had to learn another vocabulary. I must have spent many many hours scanning medical terms on line and trying to understand how they all fit together. I'm still learning but I wanted to share this with you: It's a lung disease dictionary and which part of your airways they appear in. https://www.webmd.com/lung/lung-diseases-overview#1
I asked for millions of explanations of how things fit together but unless I see it it doesn't make sense. If you need or want further explanations please google your individual problem. The lungs are just one organ but have different components that can be effected by disease.