Onrush is a related term of incursion.
As nouns the difference between onrush and incursion
is that onrush is a forceful rush or flow forward while incursion is raid; incursion.
onrush
English
Noun
(es)
A forceful rush or flow forward
An aggressive assault
incursion
English
Noun
(
en noun)
An aggressive movement into somewhere; an invasion.
Synonyms
* attack
* movement