Respuesta :

....yearn means, 1. to have an earnest or strong desire; long. 2. to feel tenderness; be moved.  ... stern means
1. Hard, harsh, or severe in manner or character: a stern disciplinarian. See Synonyms at severe.2. Showing or expressing displeasure or disapproval; forbidding or harsh: a stern face; a stern voice.
Stern is a serious and unrelenting manner usually in a authoritative way while yearns is a intense feeling of longing for someone lost or that your seperated from.
Hope this helps!