Organic Traffic: Traffic itself refers to the visits people have made to a given website during a specified or accumulative period of time. Organic traffic, then, is the arrival at a particular website through the use of a tool called a search engine, an expression that increasingly implies Google. This organic arrival at a website is typically the most significant as far as extended engagement is concerned and is more likely than other modes of arrival to result in a committed action on the part of the visitor, e.g., a sale. Visitors--even those who know otherwise--rationalize independent discovery of a website as being the result of a trusted methodology rather than the supposed manipulation of social media promotion or advertising, despite the fact that manipulations have undoubtedly influenced the placement of the website on the search engine results pages.

Search Engine Results Page (SERP): When you type a word or words into the query field of a search engine such as Google, the results that are displayed are known as SERPs. These typically include organic search results, paid advertisements, snippets, graphs and video results. 

Social Media Marketing: Often shortened to SMM, this means using social media platforms such as Facebook, Twitter, LinkedIn and Instagram to market a company's products and services. 

Web Design: This is properly thought of as a subset of the larger realm of Website Development. The design segment connotes layout, aesthetics, content, graphics. Much of what the individual visitor will experience upon connecting with a given website is the result of the design person's use of languages such as HTML, CSS and JavaScript. 

Website Development: This term refers to the work of developing a Web site for the Internet or an intranet. Typically this suggests the non-design aspects of the job.