In this chapter: (a) Nonbank corporation means any corporation incorporated or proposed to be incorporated under the laws of this state, other than (1) any bank or (2) any corporation incorporated or proposed to be incorporated under the laws of this state for the purpose of transacting business under Article 1 (commencing with Section 3500) of Chapter 19. (b) Subject name, means a name of a nonbank corporation which, as set forth, or as proposed to be set forth, in the articles of such nonbank corporation, includes bank, trust, trustee, or related words.