Journalism should belong to the category of communication, so communication covers more content than journalism. As for exams, I think they are always small. From the perspective of employment, of course, there is more room for communication. Personally, journalism is more targeted, more directional and can be learned thoroughly. If you learn communication, you will have a wide range of knowledge and know everything, but it is still very difficult to learn everything well.

My humble opinion is for reference only.