Terms like "mark", "brand" and "logo" are on occasion used interchangeably with "trademark". "Trademark", but, also will include any device, brand, label, name, signature, word, letter, numerical, form of products, packaging, colour or mix of colours, smell, sound, motion or any mix thereof which is able of differentiating products and services of one business from those of others. It must be able of graphical representation and must be applied to products or services for which it's registered.
specific types of trademark include certification marks, group trademarks and defensive trademarks. A trademark which is popularly used to describe a product or service rather than to distinguish the product or services from those of 3rd parties is on occasion called a genericized trademark. If such a mark becomes synonymous with that product or service to the extent that the trademark owner can not enforce its proprietary rights, the mark becomes generic.
A "trademark look" is a casual term for a feature look for a performer or character of some sort. it's typically not legally trademark protected and the term isn't used in the trademark law.
The two symbols related with trademarks, the trademark symbol and the registered trademark symbol, represent the position of a mark and therefore its level of protection. While may be used with any common law handling of a mark, may only be used by the owner of a mark following registration with the relevant national authority, like the U.S. Patent and Trademark Office USPTO or PTO. The correct manner to display either symbol is now following the mark in superscript style.