For the purpose of this chapter, certain terms or words used herein shall be interpreted or defined as follows: Words used in the present tense include the future; the singular number includes the plural and the plural, the singular; the word "lot" includes the word "plot;" the word "building" includes the word "structure;" the word "zone" includes the word "district;" the word "occupied" includes the word "designed" and the phrase "intended to be occupied;" the word "use" includes the words "arranged," "designed," and the phrase "intended to be used;" and the word "shall" is mandatory and not directory; and the word "abut" shall include the words "directly across from," "adjacent" and "next to." The term "such as," where used herein, shall be considered as introducing typical or illustrative, rather than an entirely exclusive or inclusive designation of, permitted or prohibited uses, activities, establishments or structures.