What are the similarities and differences between nonspecific and specific immunity?

Nonspecific immunity, also known as innate immunity, provides the first line of defense against pathogens through barriers like skin and mucous membranes, as well as immune cells that respond quickly to all invaders. In contrast, specific immunity, or adaptive immunity, targets specific pathogens with a tailored response, involving lymphocytes such as B and T cells that remember past infections for quicker responses in the future. Both systems work together to protect the body from infections, but nonspecific immunity acts immediately and broadly, while specific immunity develops more slowly and is highly targeted.