Given that you created your HN account 4 minutes ago, I'm going to give you a quick answer. If this is a real question and you post a more detailed question, I'm happy to give you more info.<p>Reddit is an entertainment site for me. Funny gifs, videos, etc.<p>HN is more about tech and the industry.
They can be the same or very different depending how you use them.<p>There are a few subreddits which would match just like HN, but there are thousands more that are filled with cats and boobs.