register vs show

register and show both are nouns.

Word	Noun	Adjective	Verb	Adverb
register	Yes	No	Yes	No
show	Yes	No	Yes	No

As verbs, register and show are synonyms defined as:

register and show: indicate a certain reading; of gauges and instruments

Other synonyms of register include read, record.

As verbs, show is a hyponym of register; that is, show is a word with a more specific, narrower meaning than register:

Other hyponyms of register include say, strike.

As verbs, show is a hypernym of register; that is, show is a word with a broader meaning than register:

Other hypernyms of register include show up.

register (noun)	show (noun)
a regulator (as a sliding plate) for regulating the flow of air into a furnace or other heating device	an act or social event involving a public performance or entertainment
an air passage (usually in the floor or a wall of a room) for admitting or excluding heated air from the room	pretending that something is the case in order to make a good impression
a cashbox with an adding machine to register transactions; used in shops to add up the bill	something intended to communicate a particular impression
(computer science) memory device that is the part of computer memory that has a specific address and that is used to hold information of a specific kind
(music) the timbre that is characteristic of a certain range and manner of production of the human voice or of different pipe organ stops or of different musical instruments
an official written record of names or events or transactions
a book in which names and transactions are listed

register (verb)	show (verb)
enter into someone's consciousness	establish the validity of something, as by an example, explanation or experiment
indicate a certain reading; of gauges and instruments	provide evidence for
record in a public office or in a court of law	indicate a place, direction, person, or thing; either spatially or figuratively
send by registered mail	give expression to
manipulate the registers of an organ	give evidence of, as of records
be aware of	indicate a certain reading; of gauges and instruments
show in one's face	finish third or better in a horse or dog race
record in writing; enter into a book of names or events or transactions	show in, or as in, a picture
enroll to vote	take (someone) to their seats, as in theaters or auditoriums
have one's name listed as a candidate for several parties	make visible or noticeable
	be or become visible or noticeable
	give an exhibition of to an interested audience