"Sticks and stones may break my bones, but words will never hurt me."
I strongly disagree with that childhood stanza.
Words are powerful, and there are some that are more powerful than others.
Love. I love you. That word can make you feel special and warm, or it could make you want to head for the hills.
Hate. I hate you. That word can crush you, or it could make you realize, as a parent, you just might be doing something right.