The French word for "prince" is "prince", pronounced preh[n]ss. (The [n] symbol means you should nasalize the vowel.)
my prince is 'mon prince' in French.
What do you call a female prince
le Prince
Prince Héritier
Prince dragon
No, Prince Albert is Monegasque.
The French name for Prince Edward Island is Île-du-Prince-Édouard. That literally translates into Island of Prince Edward.
Le prince noir
"je suis un prince"
"tu es mon prince"
like english : Prince Charles
In French, to say "Sweet Prince", you can say "doux prince" or, if sweet means candies, "prince de bonbons", but I think you wanted to know the first.