This is the 346th most frequent Ukrainian word.
раз
The Ukrainian word "раз" means "time" (as in an occurrence) or "once."
Here, 'раз' is used to mean 'time' or 'instance', indicating the count of occurrences.
Один раз я бачив цей фільм.
I have seen this movie once.
In this case, 'раз' functions as a conjunction meaning 'since' or 'because' to introduce a reason.
Раз ти вже тут, допоможи мені з цим завданням.
Since you're already here, help me with this task.
Here, 'раз' plays the role of a noun denoting an occurrence or instance, in combination with 'кожен' (each) it refers to repetitive actions.