This is the 2781st most frequent Polish word.
grzechy
"Grzechy" means "sins" in English.
The word 'grzechy' (sins) is used in a metaphorical and general moral concept context here.
Ludzkie grzechy często mają swoje źródło w ignorancji.
Human sins often have their origins in ignorance.
Here 'grzechy' (sins) is used in a personal and specific context, relating to individual actions.
Za swoje grzechy odbyłem pokutę.
For my sins, I have done penance.
In this sentence, 'grzechy' (sins) is used in a theological and categorical context, listing specific types of sins.