As used in this chapter, the following terms shall have the meanings indicated:
A nonconforming situation that occurs when the height, size or minimum floor space of a structure or the relationship between an existing building or buildings and other buildings or lot lines is not in compliance with the regulations applicable to the district in which the property is located.
A lot created at the effective date of this chapter (and not created for the purpose of evading the restrictions of this chapter) that does not meet the minimum area or width requirements of the district in which the lot is located.
A nonconforming situation that occurs when property is used for a purpose or in a manner made unlawful by the use regulations applicable to the district in which the property is located.