Wisdom is human knowledge gained not just by education and a systematic process of learning but by experience which helps a person live well, be happy and effectively make choices for themselves and others. It's a cultivated sensibility of right living, and understanding of people and processes enabling a person to get along with others and make sound decisions in life. A wise person is a good counselor or advisor, whose opinion is often sought by others. It is in contrast to intelligence which is more of an intellectual or mental skill regarding problem solving with speed and accuracy; in contrast, wisdom is what is gained by an intelligent person who consistently learns over time.
"Wisdom literature", in a Biblical context, refers to those books of the Old Testament and the Apocrypha characterised by a preoccupation with the human predicament. The books which come under this heading are Job, Proverbs, Ecclesiastes, Ecclesiasticus (or the Wisdom of Jesus the Son of Sirach) and the Wisdom of Solomon.