intrusion vs ingress

intrusion and ingress both are nouns.

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

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

Other hypernyms of intrusion include entering, entrance, entry, incoming.

intrusion (noun)	ingress (noun)
entry to another's property without right or permission	the act of entering
entrance by force or without permission or welcome	(astronomy) the disappearance of a celestial body prior to an eclipse
any entry into an area not previously occupied
rock produced by an intrusive process
the forcing of molten rock into fissures or between strata of an earlier rock formation