What is a browser? was the question we (Google) asked over 50 passersby of different ages and backgrounds in the Times Square in New York. Watch the many responses people came up with.
A lot of people answered the "what is a browser?" question saying it was a search engine, or just even, "Google". But you know, unless you work in the techno-world, is that really such a wrong answer? For all your intents and purposes, your browser is how you find things online. If you don't look closely, it is not easily distinguished from a search engine.