obtrude upon vs intrude on

obtrude upon and intrude on both are verbs.

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

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

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

Other synonyms of obtrude upon include encroach upon, invade.

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