<p><strong>Noun</strong></p><ul><li>equivalence (defs 1, 2).</li><li>the state or fact of being equivalent; equality in value, force, significance, etc.</li><li>an instance of this; an equivalent.</li><li>the quality of having equal valence.</li><li>the relation between two propositions such that they are either both true or both false.</li><li>the relation between two propositions such that each logically implies the other.</li></ul><p><strong>End of Response</strong></p>