This is the 13th most frequent Chinese word.
工作
Work; job; to work.
In this sentence, '工作' refers to one's occupation or profession.
他的工作是一名医生。
His job is being a doctor.
Here, '工作' describes a specific job or task assigned.
这份工作需要很高的技能。
This job requires high-level skills.
Here, '工作' refers to the act of working or performing one's duties.