Antibacterial, antiseptic, and disinfectant are all terms used to describe agents that can kill or inhibit the growth of microorganisms, such as bacteria and viruses. The main difference between the three is the type of microorganisms they are intended to target and the setting in which they are used.
Antibacterial agents are specifically designed to target and kill bacteria. They are commonly used in soaps, lotions, and other personal care products.
Antiseptics are similar to antibacterials, but are intended for use on living tissue. They are often used in medical settings to clean wounds, for example.
Disinfectants, on the other hand, are intended to kill or inhibit the growth of a wide range of microorganisms, including bacteria and viruses, and are typically used in non-medical settings, such as household cleaners and surface disinfectants.