JD in HR means Job Description. HR (Human Resource) is the abbreviation of human resource, which refers to human resources.
Work, a Chinese word, has two parts of speech: verb and noun. As a verb, it has the meanings of operation, action, operation, operation, etc. As a noun, it means engineering, production, business, task, occupation, and people engaged in various crafts. The concept of work is labor production, mainly referring to labor.