I would like to share difference between them from stackshare.io here.
Ant Design: A set of high-quality React components. An enterprise-class UI design language and React-based implementation. Graceful UI components out of the box, base on React Component.
Material Design: Google’s Material Design. Material Design is a unified system that combines theory, resources, and tools for crafting digital experiences.
Ant Design belongs to “JavaScript Framework Components” category of the tech stack, while Material Design can be primarily classified under “Front-End Frameworks”