Emulating a hover function

I have a graphing challenge in which I want to display a number of circles around a page but the titles of the circles are too cumbersome to place inside them. Instead, I’d like the ability for someone to just hover over the circle and have the title pop up. I’m pretty sure that’s not a native OG capability and the nearest function I’ve is the “on click” action but it’s not a suitable alternative. Any ideas or success stories with type of capability?