king
The word 're' is Italian for 'king'. It’s a masculine noun, mainly used in reference to the reigning male monarch of a nation or people. It’s used similarly to the English term 'king', in both literal and figurative contexts.
King Lear is a play by Shakespeare.
In this sentence, 'Re Lear' refers to King Lear, a titular character in one of William Shakespeare's famous tragedies.
The king of Italy lived in Rome.
This sentence is about Italy's past when the country was a monarchy, before becoming a republic. During this time, the King lived in Rome, Italy's capital.
King George VI was a British ruler.
This sentence talks about a specific historical person, King George VI of Britain. He was the king of Britain during World War II and is known for overcoming a stammering problem with the help of his speech therapist.