Software engineering is a discipline that is related to computer science, but it is not identical to it. Software engineering is concerned with the development and maintenance of software systems, including the processes and methods used to create software, as well as the design, implementation, testing, and documentation of software. It emphasizes practical and effective approaches to software development, as well as the use of engineering principles to ensure that software is reliable, efficient, and maintainable.
Computer science, on the other hand, is a broader field that encompasses software engineering and a variety of other areas, such as algorithms, computer hardware, databases, artificial intelligence, and human-computer interaction. While software engineering draws heavily on computer science, it also draws from other fields, such as mathematics, psychology, and engineering.
In short, software engineering is a subfield of computer science, but it is not the only subfield of computer science, and it is not synonymous with computer science.