Answer:
part 1: the french distinguish friends by using un ami for boys. they use une ami for girls, and des amis for friends. they distinguish best friends by saying un meilleur ami for boys, une meillure amie for girls, and des meilleures amies (or des meilleurs amis depending on the gender) for best friends.
part 2: they also use ami for friends (obviously) and connaissance for acquaintances.
Step-by-step explanation:
