On the odd chance that you have a few spare hours in your day...go to the Googlewhack website. It's a fun waste of time, considering how much time we all spend on Google. Simple game...come up with 2 words for a Google search engine that produces one and only one result.
Yeah, there are a few rules, but you can read them there. Spellos and food came up with 15,600 results. Guess there's lots in common with those two words.