Yep. Here's another way to think about it: when you look at a web page, your browser stores certain files on your computer, particularly images, so that they don't have to be loaded again on subsequent visits to the same page. For example, the Unofficial Warmoth forum logo in the upper left of the home page, that you see every time you come here. By doing this, your browser can load pages faster.
A regular refresh reloads the page, but still uses all those stored files. By contrast, a "hard refresh" instructs your browser to forget everything, and load the page starting from scratch.