Read these sentences. Ursula glanced at her boss with a smug look on her face. Ursula glanced at her boss with an assured look on her face. How are the meanings of these two sentences different? The first sentence implies that Ursula's look is sincere; the second implies that her look is feigned. The first sentence implies that Ursula looks poised; the second implies that she looks nervous. The first sentence implies that Ursula looks conceited; the second implies that she looks confident. The first sentence implies that Ursula's look is fleeting; the second implies that she looks this way all the time.