To apply or enter in response to a recruitment, contest, subscription, etc.; to submit an application or entry.
その会社に新卒で応募した。
I applied to that company as a new graduate.
懸賞に応募して景品が当たった。
I entered the sweepstakes and won a prize.
会員募集に応募した人は手続きが必要です。
People who applied for membership need to complete procedures.