ingress vs arrival

ingress and arrival both are nouns.

Word	Noun	Adjective	Verb	Adverb
ingress	Yes	No	No	No
arrival	Yes	No	No	No

As nouns, arrival is a hypernym of ingress; that is, arrival is a word with a broader meaning than ingress:

ingress (noun)	arrival (noun)
the act of entering	accomplishment of an objective
(astronomy) the disappearance of a celestial body prior to an eclipse	the act of arriving at a certain place
	someone who arrives (or has arrived)