decompress vs compress

decompress is not a noun while compress is a noun.

Word	Noun	Adjective	Verb	Adverb
decompress	No	No	Yes	No
compress	Yes	No	Yes	No

decompress (noun)	compress (noun)
	a cloth pad or dressing (with or without medication) applied firmly to some part of the body (to relieve discomfort or reduce fever)

decompress (verb)	compress (verb)
become less tense, rest, or take one's ease	squeeze or press together
decrease the pressure of	make more compact by or as if by pressing
restore to its uncompressed form