“Krishna-katha means narrations about Krishna. There are two Krishna-kathas: narrations spoken by Krishna and narrations spoken about Krishna. Bhagavad-gita is the narration or the philosophy or the science of God, spoken by Krishna Himself. Shrimad-Bhagavatam is the narration about the activities and transcendental pastimes of Krishna. Both are Krishna-katha.” (Krishna, The Supreme Personality of Godhead, Vol 1, Introduction)