practice vs employment

practice and employment both are nouns.

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

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

Other hypernyms of practice include exercise, usage, use, utilisation, utilization.

practice (noun)	employment (noun)
a customary way of operation or behavior	the occupation for which you are paid
systematic training by multiple repetitions	the act of using
the exercise of a profession	the act of giving someone a job
translating an idea into action	the state of being employed or having a job
knowledge of how something is usually done

practice (verb)	employment (verb)
learn by repetition
engage in a rehearsal (of)
carry out or practice; as of jobs and professions
avail oneself to
engage in or perform