Yes, clicking on those should move them into your inventory. What browser/OS are you on?
Firefox/Windows; though I opened it in Chrome and it also didn't respond at all when I clicked them--
Ohh. I see the problem now: they're behind the stupid stuff itch.io puts in the upper right corner. Apparently that's not just five rectangles, but an entire box that covers up the word.
If I scroll very carefully so the word is between the top of the window and the top of that box, or enlarge it to the point of ridiculousness, I can indeed click on the words.