compander vs compressor

compander and compressor both are nouns.

Word	Noun	Adjective	Verb	Adverb
compander	Yes	No	No	No
compressor	Yes	No	No	No

compander (noun)	compressor (noun)
a system for improving the signal-to-noise ratio of a signal at a transmitter or recorder by first compressing the volume range of the signal and then restoring it to its original amplitude level at the receiving or reproducing apparatus.	a mechanical device that compresses gasses
	an electronic device that reduces the dynamic range of an audio signal.