This is the 1484th most frequent Japanese word.
開き
"開き" means "opening" or "gap."
In this sentence, '開き' is used as a form of the verb '開く,' which means 'to open,' indicating the action of opening something.
そのファイルを開きました。
I opened the file.
Here, '開き' refers to a gap or space, often used in situations describing open distances or separations.
テーブルの間の開きが広がっています。
The gap between the tables is widening.
In this context, '開き' refers to the state or capacity of opening, describing how the door opens physically.