This is a very common question. While some agencies offer overlapping services with creative agencies, many agencies focus on specific services or categories such as:

Design Agency:

An agency that provides design services for various visual media such as printed matter and digital.

Digital Agency:

A nickname reserved for agencies that usually focus on digital marketing strategies and often focus on SEO and lead generation.

Advertising Agency:

An agency that focuses specifically on advertising (digital, television, radio, printed matter, etc.). We may or may not provide marketing services.

PR Agency:

An agency that provides advertising and content distribution services to maximize brand awareness.

SEO Agency:

An agency that focuses on various on-site and search marketing strategies and tactics to attract more visitors and generate leads.

Social Media Agency:

Specializes in social strategy and often manages social media accounts.

Creative agencies usually include one or more of these services.