<p><strong>Preposition</strong></p><ul><li>taking into account; in view of<ul><li>Example: The campaign was a great success, considering the strong opposition.</li></ul></li></ul><p><strong>Adverb</strong></p><ul><li>Informal: with all things considered (used only after the statement it modifies)<ul><li>Example: He paints very well, considering.</li></ul></li></ul><p><strong>Conjunction</strong></p><ul><li>taking into consideration that<ul><li>Example: Considering they are newcomers, they've adjusted very well.</li></ul></li></ul>