Many people often confuse Computer Science (CS) for Software Engineering (SE) as they use these terms interchangeably. However, Computer science is not the same as software engineering. Computer Science is the study of how computers work, most notably from the theoretical and mathematical perspective. It focuses on understanding, designing, and developing programs and computers.
On the other hand, Software Engineering is the study of how software systems are built; it also focuses on project management, quality assurance, and software testing. It practically deals with building and maintaining software systems. It is more software-oriented than Computer Science.