This is the 16679th most frequent Polish word.
współpracownik
"Co-worker" or "colleague."
Here 'współpracownik' is used in its general meaning to indicate a professional colleague or coworker.
Mój współpracownik zawsze pomaga mi w trudnych projektach.
My coworker always assists me with challenging projects.
In this example, 'współpracownik' is used in plural form to refer to colleagues as a group.
Anna zaprosiła współpracowników na swoje urodziny.
Anna invited her co-workers to her birthday celebration.
The term here indicates a specific individual within a professional context.