contagious vs contractable

contagious and contractable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
contagious	No	Yes	No	No
contractable	No	Yes	No	No

As adjectives, contagious and contractable are synonyms defined as:

contagious and contractable: (of disease) capable of being transmitted by infection

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

contagious (adjective)	contractable (adjective)
(of disease) capable of being transmitted by infection	(of disease) capable of being transmitted by infection
easily diffused or spread as from one person to another