0 the reflexive form of the pronoun 'they' -- się, sobie, siebie, sobą
They're both 16 - they're old enough to look after themselves.
1 used to emphasize the pronoun 'they' or the particular group of people you are referring to -- sami
They've decided to run the club themselves.
The staff themselves were unhappy with the decision.
2 alone or without anyone else's help -- (całkiem) sami
The kids arranged the party all by themselves.
3 for their use only -- (tylko) dla siebie
They had the whole campsite to themselves.
NOWE SŁOWA
European
May 10, 2021
SŁOWO DNIA
Shimmer
themselves