Warez originated with the word software. Ware was used as a shortened slang version of software. Wares, would normally be the plural of this. In hacker world on the internet, wares became warez.
Warez is a widely known term by those in their 20′s and 30′s but still remains for the most part unknown to those older.
A bit torrent is a types of software that downloads software from other people’s computers. There is nothing inherently wrong or illegal about using bit torrent software to download software, (warez), but on the other hand, many people use such software to illegally download bootlegged software, video’s or music.
Bit torrent software is like a gun. For certain uses it is very helpful, and is quite inexpensive or free to use. Used incorrectly, for materials with copywrite invalidations, it is totally illegal.