<p><strong>Adjective</strong></p><ul><li>related by birth; of the same parentage, descent, etc.</li><li>Linguistics. descended from the same language or form: such cognate languages as French and Spanish.</li><li>allied or similar in nature or quality.</li></ul><p><strong>Noun</strong></p><ul><li>a person or thing cognate with another.</li><li>a cognate word: The English word cold is a cognate of German kalt.</li></ul>