practice vs use

practice and use both are nouns.

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

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

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

As verbs, practice and use are synonyms defined as:

Other synonyms of practice include apply.

practice (noun)	use (noun)
a customary way of operation or behavior	the act of using
systematic training by multiple repetitions	(psychology) an automatic pattern of behavior in reaction to a specific situation; may be inherited or acquired through frequent repetition
the exercise of a profession	exerting shrewd or devious influence especially for one's own advantage
translating an idea into action	what something is used for
knowledge of how something is usually done	a particular service
	(law) the exercise of the legal right to enjoy the benefits of owning property
	(economics) the utilization of economic goods to satisfy needs or in manufacturing

practice (verb)	use (verb)
learn by repetition	put into service; make work or employ for a particular purpose or for its inherent or natural purpose
engage in a rehearsal (of)	take or consume (regularly or habitually)
carry out or practice; as of jobs and professions	use up (resources or materials)
avail oneself to	habitually do something or be in a certain state or place (use only in the past tense)
engage in or perform	avail oneself to
	seek or achieve an end by using to one's advantage