1.  employment(n = noun.state) employ - the state of being employed or having a job; "they are looking for employment"; "he was in the employ of the city"
is a kind of state
Antonym: unemployment

2.  employment(n = noun.act) work - the occupation for which you are paid; "he is looking for employment"; "a lot of people are out of work"
is a kind of business, job, line, line of work, occupation
has particulars: coaching, coaching job, booking, engagement, ministry, navigation, sailing, seafaring, work load, workload, piecework, service, telecommuting, teleworking, services, public service, paper route

3.  employment(n = noun.act) engagement - the act of giving someone a job;
is a kind of action
has particulars: shape-up, call-back, booking, reservation
Derived form verb employ₂

4.  employment(n = noun.act) exercise, usage, use, utilisation, utilization - the act of using; "he warned against the use of narcotic drugs"; "skilled in the utilization of computers"
is a kind of activity
has particulars: practice, play, abuse, misuse, development, exploitation, recycling, application, practical application
Derived form verb employ₁

1.  The act of employing or using; also, the state of being employed. [1913 Webster]

2.  That which engages or occupies; that which consumes time or attention; office or post of business; service; as, agricultural employments; mechanical employments; public employments; in the employment of government. [1913 Webster]
"Cares are employments, and without employ
The soul is on a rack."

employment, n.
1 the act of employing or the state of being employed.
2 a person's regular trade or profession.

Idiom:
employment agency a business that finds employers or employees for those seeking them. employment office (formerly employment exchange) Brit. any of a number of government offices concerned with advising and finding work for the unemployed.

N  business, occupation, employment, pursuit, what one is doing, what one is about, affair, concern, matter, case, matter in hand, irons in the fire, thing to do, agendum, task, work, job, chore, errand, commission, mission, charge, care, duty, part, role, cue, province, function, lookout, department, capacity, sphere, orb, field, line, walk, walk of life, beat, round, routine, race, career, office, place, post, chargeship, incumbency, living, situation, berth, employ, service, engagement, undertaking, vocation, calling, profession, cloth, faculty, industry, art, industrial arts, craft, mystery, handicraft, trade, exercise, work, avocation, press of business, businesslike, workaday, professional, official, functional, busy, on hand, in hand, in one's hands, afoot, on foot, on the anvil, going on, acting, in the course of business, all in one's day's work, professionally Adj, a business with an income at its heels, amoto quaeramus seria ludo, par negotiis neque supra.

N  use, employ, employment, exercise, exercitation, application, appliance, adhibition, disposal, consumption, agency, usufruct, usefulness, benefit, recourse, resort, avail, utilization, service, wear, usage, in use, used, well-worn, well-trodden, useful, subservient.

employment agency, employment agent, employment agreement, employment contract, employment interview, employment office, full employment