Hover Information - Change or Add

Hi All,

We are doing our best to get our UNA platform set up the way we like and part of that is the minutiae.  As they say, it's the little things that can make a big difference, right? 

Anyway, one of the things we'd like to be able to add and / or change is the hover information for different things on the site.  For example, as you'll see in the discussion image, there is no hover information appearing when you hover over the reaction icons.  Is this something we can add?

Another example of this is on the Friends List, you can see an X button by your friends, but it doesn't say what the X does.  I know this seems obvious to most people, but there have been some people wanting to know what it meant.  Is it possible to put a hover information box on the X so that when people hover over it, it says "Remove Friend" or something?  

Another way we would be able to accomplish informing people about this is to just put "Remove" or "Unfriend" right underneath the X on the button.  Any idea how I could do either of those things?  See my images for clarity.

Thanks!

Adam