What is the difference between allusion and reference?

Allusions and references are both literary tools for authors to connect to external material. However, they differ in their use and purpose:

  • An allusion is an indirect and brief mention of a person, event, or another work. It is a subtle reference that requires prior knowledge, and often only discerning readers will understand it. Its main purpose is to add depth to a text without explaining the connection.
  • A reference, on the other hand, is usually a direct and explicit mention of a source. Its purpose is typically to provide evidence, support, or further information in a detailed way.

In short, an allusion is an indirect reference to something usually for literary or rhetorical effect, whereas a reference is an explicit mention of a specific source for informational purposes.