This is the 2954th most frequent Polish word.
normalne
"Normalne" means "normal" or "ordinary" in English.
The word 'normalne' is used here as an adjective in its singular neuter form, modifying the noun 'zachowanie', referring to something that conforms to typical standards.
To jest normalne zachowanie.
This is normal behavior.
In this case, 'Normalne' functions as an adjective in its plural neuter form, describing the noun 'dni' (days), indicating a general standard or routine.
Normalne dni pracy trwają osiem godzin.
Normal working days last eight hours.
Here, 'normalne' is again an adjective in the singular neuter form, used in a predicative position following 'jest', highlighting the lack of typicality.