This is the 3587th most frequent Russian word.
смены
"Смены" - plural form of "смена," meaning "shifts" (as in work shifts) or "changes/replacements."
In this sentence, 'смены' refers to work shifts, emphasizing its use in a professional schedule context.
Я работаю три смены на этой неделе.
I am working three shifts this week.
Here, 'смены' signifies the replacement or rotation of guard duty, illustrating its use in military contexts.
После смены караула солдаты отдыхают.
After the guard shift, the soldiers rest.
In this context, 'смены' describes the transition or change, showing its application in a broader, metaphorical sense.