registration vs entering

registration and entering both are nouns.

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

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

Other hypernyms of registration include entrance, entry, incoming, ingress.

registration (noun)	entering (noun)
the act of enrolling	the act of entering
the act of adjusting something to match a standard	a movement into or inward
(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