work load vs employment

work load and employment both are nouns.

Word	Noun	Adjective	Verb	Adverb
work load	Yes	No	No	No
employment	Yes	No	No	No

As nouns, employment is a hypernym of work load; that is, employment is a word with a broader meaning than work load:

Other hypernyms of work load include work.

work load (noun)	employment (noun)
work that a person is expected to do in a specified time	the occupation for which you are paid
	the act of using
	the act of giving someone a job
	the state of being employed or having a job