Is there a difference between sticky buns and cinnamon rolls? Eh, not really. The main difference is shape. Sticky buns tend toawrds squareness since they’re usually made in baking pans, and cinnamon rolls (frequently made in round molds, at least in bakeries) are round. Usually.
To me the two are different only in that cinnamon rolls are usually drenched in white icing, though the pictures you just saw contradict that. I guess there really is no difference, save to say if you call what you’re making a “sticky bun” you’re under no obligation to use cinnamon (like in this week’s recipe).