pusher vs interloper

pusher and interloper both are nouns.

Word	Noun	Adjective	Verb	Adverb
pusher	Yes	No	No	No
interloper	Yes	No	No	No

As nouns, interloper is a hypernym of pusher; that is, interloper is a word with a broader meaning than pusher:

pusher: one who intrudes or pushes himself forward
interloper: someone who intrudes on the privacy or property of another without permission

Other hypernyms of pusher include intruder, trespasser.

pusher (noun)	interloper (noun)
a small vehicle with four wheels in which a baby or child is pushed around	someone who intrudes on the privacy or property of another without permission
a sandal attached to the foot by a thong over the toes
someone who pushes
an unlicensed dealer in illegal drugs
one who intrudes or pushes himself forward