As used in this chapter, the following terms shall have the meanings indicated:
Include, except as hereinafter expressly provided, any person, either principal or agent, who, in any public street or public place or by going from house to house or from place of business to place of business, on foot or on or from any animal or vehicle standing in a street, sells or barters, offers for sale or barter or carries or exposes for sale or barter any goods, wares, merchandise, services or contracts of any kind.
One or more persons of either sex, natural persons, corporations, partnerships, associations, joint-stock companies, societies and all other entities of any kind capable of being sued.