factorization

In mathematics terms the difference between factorization and refactorization

is that factorization is : An expression listing items that, when multiplied together, will produce a desired quantity while refactorization is a second or subsequent factorization.

As nouns the difference between factorization and eigendecomposition

is that factorization is : The process of creating a list of factors while eigendecomposition is the factorization of a matrix into a canonical form, whereby the matrix is represented in terms of its eigenvalues and eigenvectors.