English is a West Germanic language that was first spoken in early medieval England and is now a global lingua franca. wikipedia.org

A data entry clerk, sometimes called a typist, is a member of staff employed to type data into a database using a keyboard. The keyboards used can often have specialist keys and multiple colours to help them in the task and speed up the work. wikipedia.org

A research paper is an academic work that is usually published in an academic journal. It contains original research results or reviews existing results. wikipedia.org

A r_sum_ is a document used by individuals to present their background and skillsets. R_sum_s can be used for a variety of reasons but most often to secure new employment. wikipedia.org

Keyword research is a practice used by search engine optimization professionals to find and research actual search terms people enter into the search engines when conducting a search. wikipedia.org

A cover letter, covering letter, motivation letter, motivational letter or a letter of motivation is a letter of introduction attached to, or accompanying another document such as a r_sum_ or curriculum vitae.

Marketing research is the process or set of processes that links the producers, customers, and end users to the marketer through information. wikipedia.org

Writing in these forms or styles is usually written in an impersonal and dispassionate tone, targeted for a critical and informed audience, based on closely investigated knowledge, and intended to reinforce or challenge concepts or arguments. wikipedia.org