What is the difference between peanut butter and jam?

The question, "What is the difference between peanut butter and jam?" is actually a dirty joke. Like, "I can't peanut butter your @#$%^." Another one is "If you can't peanut butter your @#$%, you can just jam it into @#$%^."

Anyway, here's the most common definition of Peanut Butter:

• Peanut butter is a food paste made primarily from ground roasted peanuts, with or without added oil. It is popular throughout the world and is ...
  source: en.wikipedia.org/wiki/Peanut_butter
• is a blend of ground-shelled peanuts, vegetable oil and usually a small amount of salt. Some contain sugar and additives to improve creaminess and ...
  source: www.cookingbear.com/pagebuilder.php
• One product native to the Americas is peanut butter. While not indigenous to North America, peanuts were grown by South Americans at least 1,000 ...
  source: www.encyclopedia.com/doc/1G2-3434500057.html

And here's the definition of the jam:

• throng: press tightly together or cram; "The crowd packed the auditorium"
• push down forcibly; "The driver jammed the brake pedal to the floor"
• crush or bruise; "jam a toe"
• interfere with or prevent the reception of signals; "Jam the Voice of America"; "block the signals emitted by this station"
• preserve of crushed fruit
• get stuck and immobilized; "the mechanism jammed"
• fix: informal terms for a difficult situation; "he got into a terrible fix"; "he made a muddle of his marriage"
• crowd or pack to capacity; "the theater was jampacked"
• crush: a dense crowd of people
• obstruct: block passage through; "obstruct the path"
• jamming: deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems
  

source: wordnetweb.princeton.edu/perl/webwn

• Jam! is a Canadian website, which covers entertainment news. It is part of the CANOE online portal, owned and operated by Quebecor through its Sun Media division.

source: en.wikipedia.org/wiki/Jam!

• The Epistle of James is a book in the Christian New Testament. The author identifies himself as "James, a servant of God and of the Lord Jesus Christ", traditionally understood as James the Just, the brother of Jesus (see Authorship and Composition).

source: en.wikipedia.org/wiki/Jam.

• "Jam" is a song by Michael Jackson from his 1991's Dangerous album. The single was re-released in 2006 as part of Jackson's '' collection. ...

source: en.wikipedia.org/wiki/Jam_(song)

• A jam session is a musical act where musicians gather and play (or "jam") without extensive preparation or predefined arrangements; improvisation.

source: en.wikipedia.org/wiki/Jam_(music)