very close and intimate friends
amigos muy cercanos e íntimos (amigos muy cercanos e íntimos)
"They have been bosom friends since childhood."
"Han sido amigos muy cercanos desde la infancia." (Han sido amigos muy cercanos desde la infancia.)
to learn automatically from data without human intervention
to trust your own abilities and potential
a balance between two conflicting or competing factors
There is no point in worrying about past mistakes.
to offer assistance or support
a man who is excessively attached to his mother