This is the 890th most frequent Hungarian word.
okoz
"To cause" or "to result in."
'Okoz' is used here to indicate a direct causation between the rain and the flood.
Az eső árvizet okozott.
The rain caused a flood.
'Okoz' expresses here a figurative cause, linking the problem to the inconveniences experienced.
Ez a probléma sok kellemetlenséget okozott nekünk.
This problem caused us many inconveniences.
'Okoz' functions to show the source of the pain in this case being the accident.