Presupposition and entailment

PRESUPPOSITION AND ENTAILMENT

A presupposition is something the speaker  assumes to be the case prior to make and utterance.

Example:  - ''Mary's cat is cute'' the presupposition is that Mary has a cat.

An entailment is something that logically follows from what is asserted in the utterance sentences,not speakers, have entailments.

Examples: She has a new car the entailment for this would be She has something, something new, she has a car.