This is the 6294th most frequent Russian word.
урок
Lesson.
The term 'урок' is used to indicate a specific class session and its associated content.
После школы я сделал домашнее задание по уроку физики.
After school, I completed the homework for the physics lesson.
The word 'урок' refers to a formal instructional class or lesson in a specific subject.
Сегодня у нас урок математики.
Today we have a math lesson.
Here, 'урок' metaphorically represents a life lesson or valuable experience derived from challenges.