This is the 504th most frequent Hebrew word.
קרה
The Hebrew word "קרה" means "happened" or "occurred."
In this sentence, 'קרה' is used in the past tense to mean 'happened', referring to an event or occurrence.
מה קרה אתמול בזמן השיעור?
What happened yesterday during the lesson?
Here, 'קורה' is used in the present tense to indicate an ongoing or habitual action, meaning 'happens'.
זה קורה לפעמים כשלא שמים לב.
It sometimes happens when one is not paying attention.
In this context, 'קרה' in past tense again means 'happened', used to describe an event whose reason is being contemplated.