Antibacterials are substances that inhibit or kill bacteria. They are commonly used in medicine, agriculture, and sanitation to control the spread of bacterial infections. Synonyms for antibacterials include antibiotics, bactericides, germicides, microbicides, and disinfectants. Antibiotics specifically refer to substances used to treat bacterial infections in humans and animals. Bactericides or germicides are used to disinfect surfaces and objects to prevent the spread of bacteria. Microbicides are substances that can kill a variety of microorganisms, including bacteria, viruses, and fungi. Disinfectants are used to kill bacteria on surfaces and in water systems. These synonyms are all important tools in combating the spread of bacterial infections and promoting public health.