Having a doubt needs explaination plzzz

Torrent :

We can call this with other name i.e; "illegal" , because i think you are aware some users uploads many videos,movies in rapid share in different parts,instead of doing this we can upload a whole movie or whole game from 600 MB to 7 GB even un a sinle part or file which is a torrent,these torrents can only be downloaded using third party software mostly " Bit Torrent", also so many techniques are in practice nowadays which makes torrent speeds to increase

Codecs :

Codecs are a program or a coded algorithm which are used as backbone for supporting different compressed / encoded file types, i think you know mostly net downloaded videos when played gives error " Codecs Missing", these are downloadable for every players and softwares and available free on net

P2P Softwares :

what exactly a peer-to-peer network means, a LAN between 2 or more systems without a intermediare device and simply by menas of a CAT Cabling, so P2P Softwares are those which used to share files,audio,video e.t.c; between systems in a P2P LAN,

"Lime wire" Comes under this category which is used for file sharing, not only for windows to windows but also winows to macintosh e.t.c;

thanks a lot