1: ῥᾳδιουργία
(Strong's #4468 — Noun Feminine — rhadiourgia — hrad-ee-oorg-ee'-a )

lit. and primarily denotes "ease in working" (rhadios, "easy," ergon, "work"), "easiness, laziness;" hence "recklessness, wickedness," Acts 13:10 , RV, "villany," AV, "mischief." In the papyri it is used of "theft."

2: ῥᾳδιούργημα
(Strong's #4467 — Noun Neuter — rhadiourgema — hrad-ee-oorg'-ay-mah )

"a reckless act" (akin to No. 1), occurs in Acts 18:14 , RV, "villany" (AV, "lewdness").