This is the 11493rd most frequent Polish word.
jednych
"Jednych" means "some" or "certain ones" in English, typically used as a plural pronoun.
Here, 'jednych' indicates a subset of us, referring to specific individuals within a group.
Jednych z nas życie uczy cierpliwości.
Life teaches patience to some of us.
The word 'jednych' is used here to refer to 'some' objects or items in a general sense.
Jednych rzeczy nie da się zastąpić innymi.
Some things cannot be replaced by others.
In this context, 'jednych' refers to a group of people or individuals being contrasted with another.