botnet
n.— «The major difference between a bot in a botnet, and your common eggdrop or IRC client script bot in a channel, is that the botnet variety have been created with a trojan and, almost always, without the knowledge of the person whose computer they are running from.» —“Just What Is a Botnet?” by Curve DALnet Jan. 2003, 2002. (source: Double-Tongued Dictionary)
Further reading
What’s the difference between a daffodil and a jonquil? Strictly speaking, daffodil is a general term, and jonquils are a specific type of daffodil, called Narcissus jonquilla. Both belong to the botanical genus Narcissus, and most people use...
“What has a head like a cat, feet like a cat, a tail like a cat, but isn’t a cat?” Answer: a kitten! A 1948 children’s joke book has lots of these to share with kids. Plus: an easy explanation for the difference between...