Answer:
An allusion is a reference to a well-known person, place, or event, while an innuendo is an indirect or subtle suggestion or hint. An example of an allusion would be saying "I'm no Superman" to imply that you are not invincible, referencing the well-known superhero. An example of an innuendo would be saying "I like my coffee black, like my soul" to imply that you are a dark or brooding person.