Grasp leads to knowledge and knowledge, when practiced, may result in wisdom.
Knowledge is not wisdom, nor is understanding, but both combined can lead to wisdom.
Wise behavior constitutes wisdom.
Definitions of wisdom vary widely some confuse it with cognizance, other with the acquirement of knowledge still others equated with sharpness of mind or higher IQ. None of these have anything to do with wisdom for wisdom is a deed. To best understand wisdom we must take the words of the wisest man ever walked this planet, Jesus Christ. Regardless how you would like to compare Him to Moses, Buddha or Muhammad none can match His wisdom.