CCNA certification can prove that the holder has mastered the basic knowledge of the network, and can install and configure Cisco routers, switches and simple LANs and WANs by using the interface between LANs and WANs, and provide primary troubleshooting services to improve the performance and security of the network. Web page link
CCNP certification means that network professionals have the ability to install, configure and troubleshoot converged LANs and WANs from 100 nodes to more than 500 nodes. Network professionals who have obtained CCNP certification have rich knowledge and skills, and can manage routers and switches that form the core of the network, as well as edge applications that integrate voice, wireless and security into the network. Web page link
You must pass the CCNA exam to take the CCNP exam (and CCNA's certificate cannot expire). Otherwise, CCNA certificate and CCNP certificate have not passed CCNP.