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

A speechwriter is a person who is hired to prepare and write speeches that will be delivered by another person. Speechwriters are used by many senior-level elected officials and executives in the government and private sectors. wikipedia.org

Theology is the systematic and rational study of religion and its influences and of the nature of religious truths, or the learned profession acquired by completing specialized training in religious studies, usually at a university or school of divinity or seminary.

Humor is the tendency of particular cognitive experiences to provoke laughter and provide amusement. The term derives from the humoral medicine of the ancient Greeks.

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

Public speaking is the process of speaking to a group of people in a structured, deliberate manner intended to inform, influence, or entertain the listeners. It is closely allied to "presenting", although the latter has more of a commercial connotation. wikipedia.org

Grant writing refers to the practice of completing an application processes for funding provided by an institution such as a government department, corporation, foundation or trust. Such application processes are often referred to as either grant "proposals" or "submissions". wikipedia.org

A business proposal is a written offer from a seller to a prospective buyer. Business proposals are often a key step in the complex sales process i.e., whenever a buyer considers more than price in a purchase. wikipedia.org

A letter is a written message from one party to another containing information.

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.