Онлайн-словарь

I муж. friend дорогой друг! – (my) dear friend! старый друг лучше новых двух – посл. old friends and old wine are best друзья познаются в беде – посл. a friend in need is a friend indeed близкий друг – intimate/close friend закадычный друг – bosom-friend
 chum, pal разг. испытанный друг – tried friend истинный друг – true friend надежный друг – reliable friend настоящий друг – true friend друг детства – childhood friend, playfellow верный друг – faithful companion II муж. друг против друга – face to face
 vis-a-vis франц.
 opposite each other друг друга – each other, one another друг за другом – one after another, one after the other
 in single/Indian file друг с другом – with each other
 друг :
 1. friend
 2. друг другA each other друг за другом one after another

 I 
 м. friend
 ~ детства childhood friend, playfellow
 ~ дома friend of the family
 старый ~ лучше новых двух посл. an old friend is better than two new ones

 i 
 м. friend
 ~ детства childhood friend, playfellow
 ~ дома friend of the family
 старый ~ лучше новых двух посл. an old friend is better than two new ones

 II 
 ~ ~a each other, one another
 ~ без ~a without each other
 ~ за ~ом one after the other
 ~ против ~a opposite one another, vis-a-vis
 ~ с ~ом with each other

 ii 
 ~ ~a each other, one another
 ~ без ~a without each other
 ~ за ~ом one after the other
 ~ против ~a opposite one another, vis-a-vis
 ~ с ~ом with each other

 детства 
 childhood friend, playfellow

 дома 
 friend of the family

 друга 
 each other, one another
 each other

 другу 
 to each other

 за другом 
 one after another, one after the other
 in single/Indian file

 к другу 
 to one another

 на хорошие времена 
 fair weather friend

 по переписке 
 pen pal

 с другом 
 with each other
 with each other