incursion vs incoming

incursion and incoming both are nouns.

Word	Noun	Adjective	Verb	Adverb
incursion	Yes	No	No	No
incoming	Yes	Yes	No	No

As nouns, incoming is a hypernym of incursion; that is, incoming is a word with a broader meaning than incursion:

incursion: the act of entering some territory or domain (often in large numbers)
incoming: the act of entering

Other hypernyms of incursion include entering, entrance, entry, ingress.

incursion (noun)	incoming (noun)
an attack that penetrates into enemy territory	the act of entering
the act of entering some territory or domain (often in large numbers)
the mistake of incurring liability or blame

incursion (adjective)	incoming (adjective)
	arriving at a place or position
	entering upon a position of office vacated by another