'Expression' in the Bible

but with Cain and his offering he was not pleased. So Cain became very angry, and his expression was downcast.

Then the Lord said to Cain, "Why are you angry, and why is your expression downcast?

If I say, 'I will forget my complaint, I will change my expression and be cheerful,'

So she grabbed him and kissed him, and with a bold expression she said to him,