employment vs practice

employment and practice both are nouns.

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

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

Other hyponyms of employment include play, abuse, misuse, development, exploitation, recycling, application, practical application.

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

employment (verb)	practice (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