You grew up in a republic. A monarchical society can be a democracy too, as is Norway, as a matter of fact
Yes, you have a point. My bad. I just wish I could understand the reason for the existence of what -in my ignorant point of view-, is an obsolete institution.
Fun fact: vokse comes from the same Germanic root as the English verb "to wax" meaning to grow (a waxing moon, to wax great, etc.).
Why does not accept "the crown prince is a grown ass man?". No, seriously, I grow up in a democracy, what's the difference between a "prince" and a "crown prince"?
Crown prince is the man who will become king when the current king dies. (In other words the direct male heir to the throne.) His brothers are 'just' princes
"Heir apparent" could simply be the eldest son of a wealthy man to inherit his estates. This sentence speaks of royalty.
"Crowned" would mean the prince has already been coronated, in which case he would no longer be a prince, but the king.
"Crown prince" is correct, because it is a title. In this instance it is perfectly fine that both words are in their noun form.