invade vs intrude on

invade and intrude on both are verbs.

Word	Noun	Adjective	Verb	Adverb
invade	No	No	Yes	No
intrude on	No	No	Yes	No

As verbs, invade and intrude on are synonyms defined as:

Other synonyms of invade include encroach upon, obtrude upon.

invade (verb)	intrude on (verb)
march aggressively into another's territory by military force for the purposes of conquest and occupation	to intrude upon, infringe, encroach on, violate
penetrate or assault, in a harmful or injurious way
to intrude upon, infringe, encroach on, violate
occupy in large numbers or live on a host