This is the 649th most frequent Serbian word.
радник
Worker.
Here, 'радник' means 'worker' and refers to a specific individual performing a task.
Радник је поставио нову полицу у канцеларији.
The worker installed a new shelf in the office.
In this sentence, 'радник' is used to refer collectively to skilled individuals suitable for a job.
Овај пројекат захтева раднике са искуством.
This project requires workers with experience.
Here, 'радник' is in its plural form 'радници' representing a group of individuals unified in a cause related to labor.