This is the 3932nd most frequent Russian word.
действия
"Actions" or "deeds."
Here, "действия" refers to 'actions' as deliberate acts or deeds performed by someone.
Его действия спасли много жизней.
His actions saved many lives.
In this context, "действия" refers to 'operation' or 'functioning' of a specific entity or process.
Учитель объяснил правила действия формулы.
The teacher explained the rules of the formula's operation.
Here, "действия" again signifies 'actions,' emphasizing their effect or consequence.