Can I combine or display all glossaries into one?

Hello,

On this page: http://samsonhairtransplants.com/hairloss_info/glossary you see not one but three glossaries. That's because I want users to be able to easily lookup related material not just on jargons, but any taxonomy.

But it's in-efficient to have three different glossaries. Is it possible to display them as one glossary.

If not, then the only option would be to combine terms site-wide all under a single vocabulary, correct?

Can you suggest another module that could pull up related articles inside a hover tip for my non-jargon taxonomies (so can use the glossaries module just for jargons)?