Need to understand what a word means? Here they are!
Aldo/Aldii: Half freemen, they cant attend the gairethinx. Usually the aldii work for the arimanni.
Arimanno/i: Arimannia (from vlandian ari-mann, "man of the army", that is "free man active in the army"; akin old-vlandian "heer-mann") was - during the vlandian domination - a group of warriors directly subjected to the King. The aim of an Arimannia was the defence of an important strategic point. The Arimanni were freemen with the right to bear arms and vote at the gairethinx.
Arengo: an assembly of the citizens of a town in medieval vlandia and rhodokia and also the place where they assembled
Fara: A family, or a group of more families that is ruled by a chief.
Gastald: A gastald was a vlandian official in charge of some portion of the royal demesne (a gastaldate, gastaldia or castaldia) with civil, martial, and judicial powers. By the EdictumX of 643, the gastalds were given the civil authority in the cities and the reeves the like authority in the countryside. Under the Vlandian dominion, territories were delimited by giudicati or "judgments" among the several gastalds.
Gairethinx: The gairethinx was a vlandian ceremony in which edicts and laws were affirmed by the army. It may have involved the entire army banging their spears on their shields. It may have been a much quieter event.
Vlandians: Inhabitants of the Kingdom of Vlandia.
Empire of Calredia: Although the Empire isn't an in-game faction in Mount&Blade and Warband, it is often mentioned by the companions you meet on your journeys. According to Lezalit, the Empire once ruled the whole of Calredia and held other territories outside of it. Bunduk will tell you about how the Empire had tribunes, who were the people's representatives under the emperor. Travellers will tell you about the claim different factions have to rule Calredia in the footsteps of the old emperors. In Krenn's age the Calradic Empire/Calredian is still alive and quite a strong opponent.
Podestà: Podestà is the name given to certain high officials in many rhodokian cities. Mainly it meant the chief magistrate of a city state, the counterpart to similar positions in other cities that went by other names, e.g. rettori ("rectors"), but it could also mean the local administrator, who was the representative of the Vlandian Kingdom.
Consul/es: The title of consul on various state officials, not necessarily restricted to the highest.
Capitano del Popolo: Captain of the People was an administrative title used in vlandia and rhodokia. It was created when the populares, the increasingly wealthy classes of commoners (merchants, professionals, craftsmen and, in maritime cities, ship-owners) began to acquire roles in the communal administration of various cities, and needed a municipal officeholder able to counter the political power of the nobles (called milites), represented usually by the podestà (a title used for chief magistrates and other top administrators in medieval Italian cities). This might be useful in later stages of the game.
Artes minores and maiores: ??
Beneficium: A reward for either warriors or clergy, mainly plot of lands and the right to manage the people and the laws in it.
Rustico/i: Peasants living outside the city. Just for the communal age.
Cives: Replaces the Arimanni. Cives are freemen. Just for the communal age.
Religious order or confraternity: Look here
Gasind/i: Companions, bodyguards and skilled professional warriors.
Skuldheis: Minor bailiffs and sergeants.
Milites: Nobles. Just for the communal age.
Written by Wlodoviec