Which HTML element or role for a onmouseenter event

I was implementing a feature that display a tooltip by hovering a text. Thinking about accessibility, I am wondering which element or role I should address.
Eg:

<div onMouseEnter={triggerEvent}>This trigger a hover event</div> // Lack of role (button?) 
<button onMouseEnter={triggerEvent}>This trigger a hover event</button> // No onclick event, so is it really the element we need ?

In my opinion, it’s not a button nor a role ‘button’. Any suggestion?