A friend is a person associated with someone's friendship.
A friend is a close friend.
A friend is a person with whom there is a certain internal affinity, in whose support you can be one hundred percent sure. The basis of friendly relations is quite a long acquaintance and regular communication based on the discussion of feelings and experiences of each other. Friendship implies a good acquaintance and pleasure from superficial communication with a person. However, it is not associated with the desire to trust their secrets, to open the soul and rely on the support of a friend.
Friendship often serves as an intermediate stage between acquaintance and friendship. After all, before you trust a person, you need to talk with him for a sufficient amount of time, evaluate his behavior in different situations. You may not see a friend for a long period of time, but when you meet you will still find many common topics. If the friends do not communicate with each other for a long time, then, most likely, their relationship will end.