Fashion means the prevailing mode in such things as are subject to change in form or style, as in ornaments, etiquette and dress. This is the age of fashion, which is not only confined to our dress, but also in the way we speak, behave, and decorate our houses and our lifestyle in general.

In other words, A fashion consists of constantly changing trend, favored for frivolous rather than practical, logical, or intellectual reasons. It is a manner of showing how something is done or how it happens. It is a characteristic or a habitual practice. Fashion is a usage that is based on the newness of behavior. Fashion, at last, is "the make or form of something; an often personal manner or way; mode of action or operation".