It Ain't What You Say...

...it's the way that you say it, as the song says, and in this instance, the song is right.  To prove this to yourself, write a passage of dialogue between two people.  Keep the speech as neutral as you can and then inflect it with meaning by describing how  the characters are speaking - expend your energy and word power on the context of the exchange.

When you have done this,  rewrite the scene keeping the dialogue identical, but changing the way in which your characters behave.  See how radically different you can make the two versions. I remember reading somewhere that only seven per cent of communication between two people is verbal, so have some fun exploring the other ninety three percent.