An error in the software or hardware is called a bug. What is the alternative computer jargon for it?

A glitch is the alternative jargon for a bug, meaning a fault in software or hardware.

A leech is slang for someone who downloads without sharing, not a fault.

A squid is not a computing term for an error.

A slug in computing means a text identifier, not a bug.

A glitch often refers to a brief or minor malfunction.

The term bug dates from an actual moth found in an early computer.