cyst vs cystic

cyst is a noun but cystic is not a noun.

Word	Noun	Adjective	Verb	Adverb
cyst	Yes	No	No	No
cystic	No	Yes	No	No

cyst (noun)	cystic (noun)
a small anatomically normal sac or bladderlike structure (especially one containing fluid)
a closed sac that develops abnormally in some body structure

cyst (adjective)	cystic (adjective)
	of or relating to or resembling a cyst
	of or relating to a normal cyst (as the gallbladder or urinary bladder)