This is the 2387th most frequent Polish word.
zawodowych
"Zawodowych" means "professional" or "vocational" in English.
Here, 'zawodowych' describes the type of experiences, specifying them as 'professional'.
Mam wiele doświadczeń zawodowych.
I have many professional experiences.
In this sentence, 'zawodowe' modifies 'relacje', indicating that the relationships pertain to a professional context.
Relacje zawodowe mogą być zarówno formalne, jak i nieformalne.
Professional relationships can be both formal and informal.
The word 'zawodowych' here refers to 'aspects', specifying them as 'professional' aspects.