What is the difference between an antibiotic and an antiseptic?

The other day I was reading about how antibiotics and antiseptics are different, and it really helped clear up some confusion. Antibiotics are chemicals used inside the body to fight bacterial infections by targeting specific bacterial processes, while antiseptics are applied externally to living tissues to reduce microbes broadly and prevent infections on skin or wounds. This clear distinction is important because using the wrong one can cause harm or lead to antibiotic resistance. This answer explains their uses, mechanisms, regulation, and key differences clearly.