employment vs booking

employment and booking both are nouns.

Word	Noun	Adjective	Verb	Adverb
employment	Yes	No	No	No
booking	Yes	No	No	No

As nouns, booking is a hyponym of employment; that is, booking is a word with a more specific, narrower meaning than employment:

employment: the occupation for which you are paid
booking: employment for performers or performing groups that lasts for a limited period of time

As nouns, booking is a hyponym of employment; that is, booking is a word with a more specific, narrower meaning than employment:

employment: the act of giving someone a job
booking: the act of reserving (a place or passage) or engaging the services of (a person or group)

Other hyponyms of employment include shape-up, call-back, reservation.

employment (noun)	booking (noun)
the occupation for which you are paid	the act of reserving (a place or passage) or engaging the services of (a person or group)
the act of using	employment for performers or performing groups that lasts for a limited period of time
the act of giving someone a job
the state of being employed or having a job