There are three basic categories of trade-marks:
1. Ordinary marks are words or symbols (or a combination of these features), that distinguish the wares or services of a specific firm or individual. Suppose you opened a courier business which you called "Giddy-up." You could register the words as a trade-mark (assuming all legal requirements were met) for the service you offer.
2. Certification marks identify wares or services which meet a defined standard. They are owned by one person but licensed to others to identify wares or services which meet a defined standard. Examples are: the Woolmark design owned by Woolmark Americas, Ltd., for use on clothing and other wares and the logo of the Association of Professional Engineers.
3. Distinguishing guise identifies the shaping of wares or their containers, or is a mode of wrapping or packaging wares. If you manufactured candy moulded to look like butterflies, you might want to register the butterfly shape as a trade-mark under "distinguishing guise."