Google Concepts: How related are 2 words?
The Linguistic Intersection Calculator
Google Concepts is a gadget I wrote which finds the number of pages in Google relating to two words or phrases. It then finds the number of pages containing both of these terms and computes a sort of 'linguistic intersection' of the two.
If you want to do
something like this yourself, you might be interested in Google
Hacks by Rael Dornfest.