Usage patterns
〈形容詞〉表情をするto have/make a certain expression
He had a puzzled expression.
表情が変わるfor one's expression to change
Her expression suddenly changed.
〈形容詞〉表情を浮かべるto have a (certain) expression appear on one's face
He had a surprised look on his face.
〈物〉に表情があるfor something (voice, music, scenery) to have expressiveness
His voice has real expressiveness.
Expressions
険しい表情stern expression; severe expression; grim expression
