I would like to be able to add keywords as URL in the section "question" when I create New Solutions

I would like to be able to add keywords as URL in the section "question" when I create New Solutions

Hello

How could I insert URL in a field that is defined as text ?
I would need to use the solutions already defined as a database for the users. I would like them to be able to click on keywords that would be URL. These keywords would be part of the "answers" in the solution section

I would like to tag some words in the question and Answer areas

Thank you very much