tune-up vs registration

tune-up and registration both are nouns.

Word	Noun	Adjective	Verb	Adverb
tune-up	Yes	No	No	No
registration	Yes	No	No	No

As nouns, registration is a hypernym of tune-up; that is, registration is a word with a broader meaning than tune-up:

Other hypernyms of tune-up include adjustment, readjustment.

tune-up (noun)	registration (noun)
adjustments made to an engine to improve its performance	the act of enrolling
exercising in preparation for strenuous activity	the act of adjusting something to match a standard
	(music) the sound property resulting from a combination of organ stops used to perform a particular piece of music; the technique of selecting and adjusting organ stops
	a document certifying an act of registering
	the body of people (such as students) who register or enroll at the same time