These pages will live on in the temporary files unless you delete all the files once in a while. The price for this is that the pages you DO visit frequently will load more slowly the next time you visit them. It's a small price to reduce the size of that folder say every other month or so and more often if you do a lot of surfing on different web sites. Temporary Internet Files is a monster hiding on your hard drive, but now you know about it, and you know that you can control it. Let's start with software, everyone knows what that is.
Software is a computer program that does some kind of work.
It could be word processing or spread sheets or computer games or anything else we covet at the local software retail store. They are exactly the same thing. What we are talking about here is price - how much it costs. Software is traditionally pretty expensive although the price has been coming down over the years. The programmer or software developer wants to be paid a fair price for his work output.