entry vs registration

entry and registration both are nouns.

Word	Noun	Adjective	Verb	Adverb
entry	Yes	No	No	No
registration	Yes	No	No	No

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

entry (noun)	registration (noun)
the act of entering	the act of enrolling
the act of beginning something new	the act of adjusting something to match a standard
something that provides access (to get in or get out)	(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
something (manuscripts or architectural plans and models or estimates or works of art of all genres etc.) submitted for the judgment of others (as in a competition)	a document certifying an act of registering
an item inserted in a written record	the body of people (such as students) who register or enroll at the same time
a written record of a commercial transaction