The term "medieval" covers such a long period of history that language (like almost every aspect of life) evolved and changed considerably. An English peasant from a small village in 1050 would not be able to understand a peasant from that same village in 1450 - English changed so much.
In 1050, the English word for a human being was gást; by 1450 it was man or leod; the early word for a storm was ýst, later it was rak or tempest.
There was no word for "castle" in 1050, because such things did not exist; by 1100 the word castell was used. Later it was spelled castel.
Old English had no word for "sugar", a substance which was introduced as a result of the Crusades and called sugre in Middle English.
In 1050 a book was a boc, in 1450 it was a bok or book.
In 1050 a horse was hengest or hengst , in 1450 it was a hors.
Spelling also changed and simplified over time: the Old English word for "ship" was spelled scip [pronounced "ship"], in Middle English it was written ship.
I have put a few links to pictures of medieval cannon in Wikimedia Commons below:
oxford
Wench.
There were quite a few
Generally, a few hundred people.
Castleknightkingqueencrownsworddungeounnobelfreemanvassalssheildserventmanorsruthlessprisorvillageabbey
"Social class" describes the levels of medieval society.
There were many different languages in medieval Europe, as there are today, and many different words for "hospital."
Alliteration
The words are Medieval Latin and mean, literally, Great Charter
Farming, Blacksmith (training), Servants to name a few.
Many adjectives come to mind - a few are:fundisorganisedscarywilduntidydrunkenrowdy