A word cloud is a fun way to turn a collection of words into an illustration. It works, as you can see from the example here, by using combinations of font sizes in order to arrange the set of words into an image. You can then use it to illustrate your web site, letterhead or school homework, or use it as your Windows or smartphone wallpaper.
To create your word cloud you don't need any special software. Just head to https://tagul.com and enter the list of words you want to use. You can copy and paste them from any document, or type them straight into the site. You can also choose colours and other characteristics for each word, or opt for everything to be random. When you're done, hit the Visualise button and a few seconds later you'll have a word cloud image that you can download.
Although https://tagul.com/ is a commercial site, offering paid plans, it's free for non-commercial use.