Stern is a serious and unrelenting manner usually in a authoritative way while yearns is an intense feeling of longing for someone lost or that you separated from.
When someone suggests something that is incorrect and they act as if they know they are right , you might be scornful of them.
What do you mean?
Also that screen means that your teachers/board blocked the site lol
why cant i leave the house.
no one ever said i cant