As nouns the difference between cancer and initiator is that cancer is (medicine|oncology|disease) a disease in which the cells of a tissue undergo uncontrolled (and often rapid) proliferation while initiator is one who initiates.
As nouns the difference between cancer and initiator is that cancer is (medicine|oncology|disease) a disease in which the cells of a tissue undergo uncontrolled (and often rapid) proliferation while initiator is one who initiates.