ejection seat vs ejector seat

ejection seat and ejector seat both are nouns.

Word	Noun	Adjective	Verb	Adverb
ejection seat	Yes	No	No	No
ejector seat	Yes	No	No	No

As nouns, ejection seat and ejector seat are synonyms defined as:

ejection seat and ejector seat: a pilot's seat in an airplane that can be forcibly ejected in the case of an emergency; then the pilot descends by parachute

Other synonyms of ejection seat include capsule.

ejection seat (noun)	ejector seat (noun)
a pilot's seat in an airplane that can be forcibly ejected in the case of an emergency; then the pilot descends by parachute	a pilot's seat in an airplane that can be forcibly ejected in the case of an emergency; then the pilot descends by parachute