Google and Facebook are two of the biggest and best-known technology companies you can work for in Silicon Valley.

Each company is known for their perks and giant sprawling campuses, but, as it turns out, the culture in each company is quite different.

Paul Adams, the vice president of product at Intercom, worked at Google for three years, between 2007 and 2010, before leaving for Facebook, where he worked between 2011 and 2013.

There are some similarities between Google and Facebook — they're both technology companies that build products to help people communicate with one another and easily find information.

But they think in completely different ways, says Adams.