What is the difference between spyware,adware,worm and virus ?

theres really no defined differences, its more just multiple terms all applied to malicious software

What is the difference between spyware,adware,worm and virus ?ktm

Spyware is computer software that collects personal information about users without their informed consent. The term, coined in 1995 but not widely used for another five years, is often used interchangeably with adware and malware (software designed to infiltrate and damage a computer respectively).

Worms is a series of turn-based computer games developed by Team17 Software. Players control a small platoon of worms across a deformable landscape, battling other computer- or player-controlled teams. The games feature bright and humorous cartoon-style animation and a varied arsenal of bizarre weapons.

A computer virus is a computer program that can copy itself and infect a computer without permission or knowledge of the user. The original may modify the copies or the copies may modify themselves, as occurs in a metamorphic virus. A virus can only spread from one computer to another when its host is taken to the uninfected computer, for instance by a user sending it over a network or carrying it on a removable medium such as a floppy disk, CD, or USB drive. Additionally, viruses can spread to other computers by infecting files on a network file system or a file system that is accessed by another computer. Viruses are sometimes confused with computer worms and Trojan horses. A worm, however, can spread itself to other computers without needing to be transferred as part of a host.