intrude on vs obtrude upon

intrude on and obtrude upon both are verbs.

Word	Noun	Adjective	Verb	Adverb
intrude on	No	No	Yes	No
obtrude upon	No	No	Yes	No

As verbs, intrude on and obtrude upon are synonyms defined as:

intrude on and obtrude upon: to intrude upon, infringe, encroach on, violate

Other synonyms of intrude on include encroach upon, invade.

intrude on (verb)	obtrude upon (verb)
to intrude upon, infringe, encroach on, violate	to intrude upon, infringe, encroach on, violate