To begin simply type in as many domain names as you want into the Domain Names box on the left,
their availability will automatically show at the bottom of the page.
Starting with creation tools
Put your mouse over the Create menu, click on List,
and type "fold" into the box that appears.
Now use the Create menu again and this time click Thesaurus.
You'll see the synonyms appear in the Domain Names box "bend, break, bust, ...",
and since they appear in the Domain Names box, they are automatically checked for availability.
Mixing the creation tools
Starting with what we have,
lets add another Creation tool List(Create>>List) since all of the domains we created are taken.
Now type "s" into the new List, notice how all of the Domain Names are pluralized by adding an s.
Now add "123" to the list so you have "s 123".
Notice how the generated names have doubled by mixing in a creation list with 2 words;
we now have "bends, bend123, breaks, break123, ...".
Let's start over by using the Start Over button and confirming yes.
Now add a Creation tool List (Create>>List) and type in "Learning how to filter".
Now add a Filter tool List (Filter>>List) and type in "how".
Notice that in the Domain Names box the word "how" has disappeared.