'Friend' in the Bible

And David said, Is there still anyone of Saul's family living, so that I may be a friend to him, because of Jonathan?

And the king said, Is there anyone of Saul's family still living, to whom I may be a friend in God's name? And Ziba said, There is a son of Jonathan, whose feet are damaged.

And David said, I will be a friend to Hanun, the son of Nahash, as his father was a friend to me. So David sent his servants, to give him words of comfort on account of his father. And David's servants came into the land of the children of Ammon.

But Amnon had a friend whose name was Jonadab, the son of Shimeah, David's brother: and Jonadab was a very wise man.

So Hushai, David's friend, went into the town, and Absalom came to Jerusalem.

Then Hushai the Archite, David's friend, came to Absalom and said, Long life to the king, long life to the king!

And Absalom said, Is this your love for your friend? why did you not go with your friend?