(a) For purposes of this Zoning Ordinance, certain words or terms used herein shall be defined as follows:
(1) "Person" includes a firm, association, organization, partnership, trust, company or corporation as well as an individual.
(2) "Shall" is mandatory, "may" is permissive and "should" is preferred.
(3) "Used" or "occupied" include the words "intended, designed or arranged to be used or occupied. "
(4) "Lot" includes the words plot or parcel.