For the purposes of this title, the following words and phrases shall have the following meanings ascribed to them respectively.
   ACT. The taking of action or a failure or omission to take action.
(ILCS Ch. 720, Act 5, § 2-2)
   ANOTHER. A person or persons other than the offender.
(ILCS Ch. 720, Act 5, § 2-3)
   CONDUCT. An act or a series of acts, and the accompanying mental state.
(ILCS Ch. 720, Act 5, § 2-4)
   OFFENSE. A violation of a penal statute of this city or state.
(ILCS Ch. 720, Act 5, § 2-12)