decompressing vs decompress

decompressing is a noun but decompress is not a noun.

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

decompressing (noun)	decompress (noun)
relieving pressure (especially bringing a compressed person gradually back to atmospheric pressure)

decompressing (verb)	decompress (verb)
	become less tense, rest, or take one's ease
	decrease the pressure of
	restore to its uncompressed form