Fruit preserves refers to fruit, or vegetables, that have been prepared, canned or jarred for long term storage. Jam is made from 50% fruit & 50% sugar The preparation of fruit ...
http://en.wikipedia.org/wiki/Jam

The Jam were an English mod revival band active during the late 1970s and early 1980s. While they shared the "angry young men" outlook and fast tempos of their punk rock ...
http://en.wikipedia.org/wiki/The_Jam

Jam Product Information. Jam is a software build tool that makes building simple things simple and building complicated things manageable. It has been freely available as C source ...
http://www.perforce.com/jam/jam.html

JAM Productions creates radio jingles, TV station packages, commercials and music for broadcasters worldwide.
http://www.jingles.com/

Pearl Jam - pearljam.com - the official website of Pearl Jam and the Ten Club
http://pearljam.com/