Which literary term best suits ‘Pilgrim’s Progress’?

Allegory is a literary term in which one story is told in the guise of another story.
- In other words, an allegory is a story of double meaning.
- Its author comments upon some persons or events of his age under disguised names.
- It may be both in prose and in verse.
- Bunyan’s 'Pilgrim’s Progress' is a well-known allegory in prose which deals with the Christian notion of a soul’s salvation.
- Dryden’s Absalom and Architople is a political allegory.

Source: An ABC of English Literature - Dr. M Mofizar Rahman