sailing vs employment

sailing and employment both are nouns.

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

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

Other hypernyms of sailing include work.

sailing (noun)	employment (noun)
riding in a sailboat	the occupation for which you are paid
the work of a sailor	the act of using
the departure of a vessel from a port	the act of giving someone a job
the activity of flying a glider	the state of being employed or having a job