This is the 10221st most frequent Japanese word.
除
"除" means "remove," "exclude," or "eliminate."
In this sentence, '除外されています' means 'excluded.' The word '除' in '除外' conveys the meaning of excluding or removing from consideration.
そのエリアは立入禁止で、除外されています。
That area is restricted and excluded.
Here, '除かれました' means 'was removed.' The word '除' emphasizes removal or elimination in this context.
彼の意見が議論から除かれました。
His opinion was removed from the discussion.
In this example, '掃除' means 'cleaning,' where '除' contributes to the meaning of removing dirt or cleaning away mess.