A generic drug is the same as a brand-name drug in dosage, safety, strength, quality, the way it works, the way it is taken and the way it should be used. FDA requires generic drugs have the same high quality, strength, purity and stability as brand-name drugs.
A matrix is a rectangular array of numbers arranged in rows and columns. The array of numbers below is an example of a matrix. The number of rows and columns that a matrix has is called its dimension or its order. By convention, rows are listed first; and columns, second.
A communications matrix can be a tool to facilitate your communications plan or it can be your entire communications plan. The matrix is a simple concept that lists the team members/stakeholders names on one side of a spreadsheet and the communication documents/mode of communication on the other.