Words that describe the expressions and actions of the characters in the novel may include: - Manners: Smiling, frowning, blinking, squinting, proud, deep in thought, nervous, focused, absent-minded, etc. - Movement: Nodding, shaking head, dancing, coughing, breathing deeply, dragging, trembling, pausing, hesitating, etc. These words could be used to describe the expressions, postures, and mental states of the characters to enhance the novel's expressiveness and emotional resonance. Of course, when describing the expressions and actions of the characters, it also needed to be combined with the specific situation and the character's personality to carry out an in-depth description so that the readers could feel the emotions and thoughts of the characters more vividly.