What's the difference between jam and jelly?

[ahlam1399]

http://img-s-msn-com.akamaized.net/tenant/amp/entityid/BBGbu8T.img?h=100&w=100&m=6&q=60&o=f&l=f&x=615&y=1493Jam. Jelly. Preserves. Marmalade. They're all good on toast, but what makes them different?

أكثر... (http://www.msn.com/en-ca/foodanddrink/tipsandtricks/whats-the-difference-between-jam-and-jelly/ar-BBGh1xv?srcref=rss)