What kind of engine ruins itself when the timing chain or belt breaks?

What kind of engine can ruins itself when the timing chain or belt breaks?

What is an interference engine?

Auto Repair Blog - » Interference engines and what you need to know. (http://www.autoeducation.com/blog/item/2/)
And this:
http://leemyles.com/articles/interference-engines-and-timing-belts.html

Inerference.

Any and all

Interference Engine.