No partnership, common law trust or association, or individual using a trade name, shall use, either as a part of its name or as a prefix or suffix thereto or as a designation of the business carried on by it, the word “bank”, “banking”, “banker”, “bankers”, “trust” or “savings”, provided either the word “bankers” or the word “trust” may be so used when qualified and immediately preceded by the word “investment”, but not followed by the word “company” or “corporation”. The provisions of this section shall not apply to any charitable or athletic association. No provision of this section shall prevent any savings and loan association organized under the provisions of § 36a-70 from using the term “savings” either as a part of its name or as a prefix or suffix thereto or as a designation of the business carried on by it.