Computer science and computer information systems are usually separate degrees in both American and European universities, though with significant overlap. The difference is that computer science is somewhat more technical and theoretical, while information systems are geared more towards practical applications.
To state the same another way, computer information systems focuses on business functions and particular solutions. This is a good career for someone with strong communication, organizational, and decision-making skills.
Computer science looks at hardware and software in much greater detail; programming, algorithms, analysis techniques, testing, and data structures make up the bulk of this degree course. Once graduated, this deeper knowledge of computer systems enables a student to pursue a career in any of several specialized fields, including cybersecurity, artificial intelligence, cloud computing, and data analytics.
Graduates of both courses can find a wide range of positions in various industries, from highly demanding startups to more sedate, established organizations in finance, government, and of course technology.