This is the 724th most frequent Russian word.
ответственность
Responsibility.
The word 'ответственность' (responsibility) refers to an individual's accountability or ownership regarding their behavior or actions.
Я принимаю ответственность за свои поступки.
I take responsibility for my actions.
Here, 'ответственность' (responsibility) implies a duty or obligation tied to a role or situation.
Учитель несёт ответственность за успехи своих учеников.
A teacher bears responsibility for their students' successes.
In this context, 'ответственность' (responsibility) is used abstractly as a character trait or value that contributes to dependability.