What is the difference between the two main types of immunity?

The two main types of immunity are innate immunity and adaptive immunity. Innate immunity is the body's first line of defense, providing a rapid, non-specific response to pathogens through physical barriers and immune cells like macrophages and neutrophils. In contrast, adaptive immunity develops more slowly and is specific to particular pathogens, involving T and B lymphocytes that create a memory of the invader, allowing for a stronger and faster response upon subsequent exposures. Together, these systems work to protect the body from infections.