So for example, you could enter 'nevada' and click 'filter', and it'd give you words that are related to casino and nevada. You can also filter the word list so it only shows words that are also related to another word of your choosing. By default, the words are sorted by relevance/relatedness, but you can also get the most common casino terms by using the menu below, and there's also the option to sort the words alphabetically so you can get casino words starting with a particular letter. The words at the top of the list are the ones most associated with casino, and as you go down the relatedness becomes more slight. You can get the definition(s) of a word in the list below by tapping the question-mark icon next to it.
The top 4 are: nevada, chicago, las vegas and monaco. Below is a massive list of casino words - that is, words related to casino.