Is matrix the same as cross-table?

Hello, Madhurya!   No it is not.   A matrix is a mathematical object like a number is. (matrices relate to linear algebra in the same way numbers relate to algebra).   A cross-table is a specific table which is used to show how two variables relate to each other. Here's a lecture on that:   https://www.udemy.com/the-business-intelligence-analyst-course-2018/learn/v4/t/lecture/10117418?start=0   Best, The 365 Team