Smiler
Part of speech: noun
Definition: Someone who smiles. The mouth.
Countenance
Part of speech: noun
Definition: Appearance, especially the features and expression of the face.
Part of speech: verb
Definition: To tolerate, support, sanction, patronise or approve of something.
Example sentence: Smiling always with a never fading serenity of countenance, and flourishing in an immortal youth.