Simply put, AdWords (now more commonly known as Google ads) is a system that allows businesses to bid for advertising space in the Google search results and on other Google-affiliated properties. AdSense is a system that allows publishers and website owners to sell ad space to businesses.
Google AdWords and Google AdSense are two programs run by Google. AdWords allows users to create adverts. When you are creating adverts with AdWords, you need to know the right keywords to use so that your adverts can easily show when Google returns search results. The technology used by AdWords allows it to show relevant search results for different regions of the world. Google AdSense is a technology used to post adverts generated by AdWords on users' websites. This is one of the ways people make money with their blogs. Most website owners get paid by Google when the adverts showing on their websites are clicked by website visitors. Some people pay some money to run their ads by enrolling in the AdWords program. Also, there are people called publishers who get paid for allowing these ads to run on their websites. However, they get paid when they meet up with some conditions.
Google AdSense is something that publishers use. This is also something that can be used by website owners. You will use AdSense when you want to reserve some slots on your website for Google AdWords. This explains why this is perfect for website owners. Google AdWords is normally used by different marketers and also business owners so that they can start advertising their products and services on Google. For example, there are some people who would like their products or their company to be on one of the first pages in Google. By doing this, people will be able to see the products and services more. Through Google AdSense, website owners can make some money while people would need to pay to avail of Google AdWords.