thruster vs trespasser

thruster and trespasser both are nouns.

Word	Noun	Adjective	Verb	Adverb
thruster	Yes	No	No	No
trespasser	Yes	No	No	No

As nouns, trespasser is a hypernym of thruster; that is, trespasser is a word with a broader meaning than thruster:

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

Other hypernyms of thruster include interloper, intruder.

thruster (noun)	trespasser (noun)
a small rocket engine that provides the thrust needed to maneuver a spacecraft	someone who intrudes on the privacy or property of another without permission
one who intrudes or pushes himself forward