What is the difference between close friend and best friend?

A close friend is someone with whom you share a strong bond and have a deep connection, but may not necessarily be your closest or most trusted confidant. A best friend, on the other hand, is someone who you consider as your closest and most trusted companion, with whom you share your deepest thoughts, feelings, and experiences. Best friends often have a level of intimacy and understanding that goes beyond what is typically shared with close friends.