I think the OP meant AdSense (now Google Ads), which is when publishers display ads from Google's advertiser inventory. Those are a combination of text-only or banner ads. Although I mostly see banner ads on the rare occasions I turn off my adblocker.

I wasn't sure, I haven't used Google search (directly) for years now. I guess I could have checked. I didn't realize that until I saw your comment.

Actually your sibling's comment made me realise that you were talking about the old style of ads in web pages.

Within the Google search itself, I was surprised by the number of ads that are disguised as search results. It's grown significantly. Now I have to scroll to get real results...