What is the contrast Charlotte and Fern regarding their relationship with Wilbur

Ferns relationship in contrast to charlottes relationship with wilber was that ferm was more of a friend who loved to be in wilbers compamy they enjoyed eachothers company and loved to be around eachother. They were best friends. Whereas charlottes realtionship was more like a mother to wilber.she looked out for him comforted him when he was sad and treated him like her child.