働く, はたらく
Godan verb, Intransitive
1. to work, to labor, to labour
2. to function, to operate, to be effective, to work (i.e. ... works), to come into play
3. to commit (e.g. a crime), to perpetrate, to do, to act, to practise, to practice
Linguistics terminology
4. to be conjugated
彼は5時間以上もぶっ続けで働いた。
ために, 為に, 爲に
Conjunction, Usually in kana
1. for, for the sake of, to one's advantage, in favor of, in favour of, on behalf of
2. because of, as a result of
雨のために私は家にいた。