Unit 9

A sentence that is always true because it says something obvious.

• Tautology

• Contradiction

• Entailment

• Paraphrase

A sentence that can never be true because it says two opposite things.

• Entailment

• Contradiction

• Tautology

• Paraphrase

If the first sentence is true, then the second one must also be true.

• Tautology

• Contradiction

• Entailment

• Paraphrase

Two different sentences with the same meaning.

• Tautology

• Contradiction

• Entailment

• Paraphrase

A common belief about a group or thing that is not always true.

• Paraphrase

• Stereotype

• Entailment

• Contradiction

Two opposite words, but both can be false at the same time.

• Contradiction

• Entailment

• Contrariety

• Tautology

"It will rain tomorrow or it won't."

• Tautology

• Contradiction

• Entailment

• Paraphrase

"She is both married and single at the same time."

• Tautology

• Contradiction

• Entailment

• Paraphrase

"John passed the test." → "John took the test."

• Tautology

• Contradiction

• Entailment

• Paraphrase

"She bought a car." = "She purchased a car."

• Tautology

• Contradiction

• Entailment

• Paraphrase