Thank you guys.
It just scares me when I think about it.
People die out everyday because of this unpredictable illness.
what type of cancer is considered as the most dangerous cancer nowadays?
Brain Cancer probably?
or Is there any way that we can prevent or protect ourselves from cancer?
Well first let me also answer your question as to what's the difference between a cancer. Cancer is a general term for any disease that occurs because some cell in teh body has mutated and started to multiply nonstop and eventually becomes capable of spreading.
A tumor or a neoplasm is generally a big mass of cells. Some tumors are benign, meaning they don't become capable of spreading throughout the body. This also can mean in layman's terms that it's not a cancer and generally won't be capable of killing you (assuming it doesn't do something crazy like block a blood vessel or take up too much space. Most cancers do form tumors, but not all of them (such as leukemia, in this case all teh cancer cells are in the blood and bone marrow and can't form the solid masses that are called tumors. some people get super fancy and call these "liquid tumors", but I'm not a fan of that.
It's really hard to answer the question of what's the worst cancer because for each organ or other part of the body there are multiple types of cancer depending on which cell types are forming the cancer. Some cancers are common, others are extremely rare, some are deadly and some are easily curable. There are actually curative treatments for many types of cancers. Brain cancer has several types and there are some that are treatable and some that are horrible to get.
Of all cancers to get, I'd say many pancreatic cancers, many lung cancers, and many ovarian cancers are among the worst to get. Of the cancers that I wouldn't mind having, there are a couple skin cancers, most thyroid cancers, and testicular cancers that are easily treatable nowadays.
How to prevent cancer? depends on teh type, don't smoke to decrease the chances of developing lung Ca and pancreatic Ca, etc. wear sun screen and don't try to tan a lot to reduce your risk of skin cancers.
Lastly, you shouldn't think of cancer as some mysterious illness that strikes at random and is to be more feared than any other disease. Cancer is a disease, it sucks. There are other diseases that are also very bad to get. In the end, try to live as healthy a life as you reasonably can. You only get one, enjoy it while it's there instead of fearing when it's not going to be there.