the knights were always soo good at building and the nobles used their building skills to kill them and take their slaves
A knight would often be a vassal of a more powerful noble, or subsidiary to the noble in another way.A powerful noble could also hold a knighthood himself.
A Lord was a powerful noble
jousting was typically between two knights
Knights
noble and other people who lived in the castle
Helium is considered to be a noble gas as it has completely filled orbitals like other elements of group 18 (noble gases) and is also chemically inert.
"Lady", knights married noble womens, noble womens are ladys.
The full name for the Knights of Labor is the "Noble and Holy Order of the Knights of Labor". It was shortened to make it easier to say and to remember.
They had to be noble and well mannered. They also had to be good at horsemanship and swordsmanship.
Usually their noble steed, which is a Horse.
Generally (but not always) stable ions will have the same the electronic configuration as that of noble gases (completely filled valence shells / orbitals)
Today one can simply wear an armor and call himself a knight, back in medieval you had to be a noble.