Bonjour

Anna is more beautiful than Anna (comparatif supériorité)

Kate isn't as beautiful as Anna (comparatif égalité)

Anna is less stupid than Kate (comparatif d'infériorité)

Kate is less intelligent than Anna  (comparatif infériorité)

She is the most intelligent of her class (superlatif)

Kate is older than Anna  (comparatif de supériorité)

Kate is the oldest pupil (superlatif)

Anna is the youngest (superlatif)

Kate is taller than Anna (comparatif de supériorité)

Anna isn't as tall as Kate   (comparatif d'égalité)

Kate isn't as young as her (comparatif d'égalité)

bonne journée ☺☺☺