The Intelligent System is a set-in, Internet-connected network with the ability to gather and evaluate knowledge and communicate with various systems. Other examples of Intelligent Systems include experience, security, and aptitude to learn from connectivity, the ability to adapt to current data, and remote monitoring and administration capabilities.
Artificial intelligence (AI) is a part of computer science that emphasizes the formation of intelligent automata that act and answer like humans. Computers with artificial intelligence are developed for speech recognition.
For upskilling in Artificial Intelligence, I suggest you go with the Intellipaat Artificial Intelligence course online.