Nitrogen fertilizers

Hey Jim and group, my name is Bill. This is my first post in this
group. I am from the Saint Louis, Missouri area, and mainly doing
gardening by small containers. I live in a subdivision of Villas with
limited space. I have a question about the nitrogen compounds in
fertilizers. What is the difference between Ammonium Nitrate and Urea
Fertilizer? I know urea is 46% nitrogen, but will it work in place of
ammonium nitrate in the weekly-feed formula?