This is a pretty straightforward list from the highest rank to the lowest, so I'll keep it short and sweet.
Royalty:
King/Queen- Obviously rules the kingdom
Prince/Princess- Used to address descendants of royal bloodlines. Does not only apply to direct descendants. (Example: A Duke/Duchess could be a cousin to the King/Queen, so the Duchess's son/daughter would be a prince/princess)
Nobility:
Duke/Duchess- Second highest rank in the kingdom, rules over a large portion of land in a kingdom. Usually related to the ruling family.
Marquess/Marchioness- The direct supporters of a Duchess, usually through financial or military aid.
Earl/Countess- Rulers of cities in a duchy.
Viscount/Viscountess- Rulers of small towns or villages.
Minor Nobility:
Baron/Baroness- Servants to higher rank nobility through financial aid or military support. Baron is to Viscount and Earl, as a Marquess is to a Duke.
Lord/Lady- Title used to adress all nobility, only the King/Queen and Prince/Princesses would be referred to by actual rank.
Knight/Dame- A title to those who've made impressive contributions to the kingdom, usually in military service.
Once more of the story is out, I'll update a couple more Auxiliary chapters about level progression and adventurer ranks. Wouldn't want to inadvertently spoil my own story..
Have a wonderful day, strong and handsome reader~~