'Prophet' in the Bible

Now it came to pass, as David sat in his house, that David said to Nathan the prophet, Lo, I dwell in an house of cedars, but the ark of the covenant of the LORD remaineth under curtains.

Now the acts of David the king, first and last, behold, they are written in the book of Samuel the seer, and in the book of Nathan the prophet, and in the book of Gad the seer,