Nouns

(n)catching(baseball) playing the position of catcher on a baseball team
(n)detection, catching, espial, spying, spottingthe act of detecting something; catching sight of something
(n)catching, contractingbecoming infected“catching cold is sometimes unavoidable”, “the contracting of a serious illness can be financially catastrophic”

Adjectives

(s)catching, communicable, contagious, contractable, transmissible, transmittable(of disease) capable of being transmitted by infection