(i) Antiseptic is a class of chemicals that is able to destroy microorganisms that are capable of causing contamination or disease, but it causes no harm to human beings.
Benzyl alcohol is an example of an antiseptic.
(ii) Antibiotic is a chemical produced by microorganisms that are capable of destroying or inhibiting the growth of other microorganisms. They are differentiated from antiseptics by the property of being easily transferred to the lymphatic system to fight infections.
Penicillin is an example of an antibiotic.