intrusion vs encroachment

intrusion and encroachment both are nouns.

Word	Noun	Adjective	Verb	Adverb
intrusion	Yes	No	No	No
encroachment	Yes	No	No	No

As nouns, intrusion and encroachment are synonyms defined as:

intrusion and encroachment: entry to another's property without right or permission

Other synonyms of intrusion include trespass, usurpation, violation.

As nouns, intrusion and encroachment are synonyms defined as:

intrusion and encroachment: any entry into an area not previously occupied

Other synonyms of intrusion include invasion.

intrusion (noun)	encroachment (noun)
entry to another's property without right or permission	entry to another's property without right or permission
entrance by force or without permission or welcome	influencing strongly
any entry into an area not previously occupied	any entry into an area not previously occupied
rock produced by an intrusive process
the forcing of molten rock into fissures or between strata of an earlier rock formation