home of the aesthetic revolutionaries... "Non scholae, sed vitae discimus."
A logo is a perspicuous glyph or symbolic, identifying mark that conveys origin, identity, or ownership. The main function is to elicit recognition. The object of a logo is to act as a mnemonic device and identifier, to communicate a desired thought or feeling, and to generate a desired emotional response. A thought-provoking logo design can strengthen your brand image and corporate identity, giving you a psychological advantage over your competition. Your logo is the core of your corporate identity, defining and symbolizing the character of your company or organization. (http://www.logodesignsource.com/types.html)
There are four types of logos: Iconic/Symbol Mark; Letter Mark, Word Mark, Combination Mark
A logotype, commonly known in the design industry as a "word mark", incorporates your company or brand name into a uniquely styled type font treatment. Type fonts come in thousands of possible variations, shapes, sizes, and styles, each conveying a slightly different impression upon your intended audience. Script fonts imply a sense of formality and refinement. Thick fonts proclaim strength and power, whereas slanted type fonts impart a sense of motion or movement. Type font treatments can also include hand-drawn letters, characters or symbols that have been rendered in such a way as to intrigue the eye and capture the interest. Images can also be integrated into a logotype, often to great visual effect. Of prime consideration when selecting a logotype or wordmark is legibility and ease of recognition, even when reduced to the size required for printing your business cards.