One of the main themes is female sovereignty. In the tale, the old woman gets to choose whether to be beautiful or virtuous, showing a kind of power. Another theme is marriage. It explores different aspects of marriage, like the relationship between husbands and wives, and how they should treat each other.
The Wife of Bath is a very strong - willed character. She has her own views on marriage and is not afraid to share them. For instance, she's been married five times and believes she has a great deal of experience in matters of love and relationships.
The 'Canterbury Ghost Story' perhaps centers around the supernatural experiences in Canterbury. It could be about a particular area, say a graveyard in Canterbury where there are tales of ghostly figures roaming at night. Maybe it has to do with a local legend of a person who died unjustly in Canterbury and now their spirit lingers, causing unease and fear among those who encounter it.
The Pardoner's Tale' can also be considered among the best. It has a moral lesson at its core. The Pardoner tells a story about greed and how it can lead to destruction. The three rioters in the story are lured by the idea of easy wealth and in the end, they meet a tragic fate. This tale shows Chaucer's ability to blend morality with an interesting narrative.
The Canterbury Tales has its roots in Chaucer's observation of the world around him. The stories were a way to showcase the complexity of human behavior and the different lives led by people. They also serve as a commentary on the values and issues of the time.