How do you explain "countenance" to small children?


Pardon my ignorance. How do I explain what "countenance" is to my 5 and 7 year olds? We are studying Genesis and came to Genesis 4:5 and my 7 year old asked what is "countenance" what does that mean -- how do I explain? Honestly I don't know myself.


Countenance is the expression on a person's face: happy, sad, angry, afraid, etc.

When Cain's countenance fell, it means he started frowning. The sides of his mouth went down.