How are permineralization and replacement the same?

Permineralization and replacement are both fossilization processes that involve the mineralization of organic remains. In permineralization, minerals fill the empty spaces within the organic material, preserving its original structure, while in replacement, the original organic material is gradually replaced by minerals, effectively reconstructing the fossil in a new mineral form. Both processes result in the preservation of the organism's shape, allowing for the study of its morphology. Ultimately, they serve to transform organic material into fossilized remains, contributing to our understanding of past life.