jQuery

Semantic HTML refers to numerous coding tags to indicate site structure and relative importance within a page’s content. This can be as simple as bolding or italicizing certain words, all the way to how you lay out the content to make it more easily readable by both users and search engines.

Refers to the entirety of a company’s potential customer base. The total addressable market might be used to refer to the broadest possible marketing campaign that would still reach a relevant audience.

Often, this market is used not to create marketing campaigns, but to break into sub-groups, from which more targeted marketing efforts can be made to more specialized but still large groups of potential customers.

A meta description is an HTML tag for a web page that describes the page briefly, summarizing it. 

Meta descriptions are read by search engines and often displayed for users. For example, the brief description for web pages you see in Google results is often pulled directly from the page’s meta description.