communicable vs catching

communicable is not a noun while catching is a noun.

Word	Noun	Adjective	Verb	Adverb
communicable	No	Yes	No	No
catching	Yes	Yes	No	No

As adjectives, communicable and catching are synonyms defined as:

communicable and catching: (of disease) capable of being transmitted by infection

Other synonyms of communicable include contagious, contractable, transmissible, transmittable.

communicable (noun)	catching (noun)
	(baseball) playing the position of catcher on a baseball team
	the act of detecting something; catching sight of something
	becoming infected

communicable (adjective)	catching (adjective)
readily communicated	(of disease) capable of being transmitted by infection
(of disease) capable of being transmitted by infection