SEO content is any content created with the goal of attracting search engine traffic. wikipedia.org

Writing is a medium of communication that represents language through the inscription of signs and symbols. wikipedia.org

A blog is a personal journal published on the World Wide Web consisting of discrete entries ("posts") typically displayed in reverse chronological order so the most recent post appears first. wikipedia.org

Content creation is the contribution of information to any media and most especially to digital media for an end-user/audience in specific contexts. wikipedia.org

Copywriting is the use of words and ideas to promote a person, business, opinion or idea. wikipedia.org

Content strategy refers to the planning, development, and management of content, written or in other media. wikipedia.org

Professional writing involves the use of clear language to convey information in a way that is easily understood by the intended audience. Individuals who can use language well may be employed as full-time professional writers in a variety of communications-related occupations, such as wikipedia.org