Analgesics are medicines that are used to relieve pain. They are also known as painkillers or pain relievers. Technically, the term analgesic refers to a medication that provides relief from pain without putting you to sleep or making you lose consciousness.

Many different types of medicines have pain-relieving properties, and experts tend to group together those medicines that work in a similar way. Two of the most common groups of pain killers are nonsteroidal anti-inflammatory drugs (NSAIDs) and opioids (narcotics), but there are many more.

Ref. https://www.drugs.com/drug-class/analgesics.html