Formal Communication:
* Letters: Business letters, formal complaint letters, cover letters, recommendation letters, etc.
* Reports: Financial reports, research reports, progress reports, project reports, etc.
* Proposals: Business proposals, research proposals, project proposals, etc.
* Memorandums (Memos): Internal communication within an organization.
* Contracts: Legal agreements between parties.
* Policies: Guidelines and procedures for an organization.
* Regulations: Official rules and requirements.
* Legal Documents: Wills, trusts, contracts, court filings, etc.
Informal Communication:
* Emails: Personal and professional communication.
* Text messages: Short, informal messages.
* Social media posts: Facebook, Twitter, Instagram, etc.
* Blogs: Online journals.
* Forums: Online discussion boards.
* Instant messaging: Real-time chat applications.
* Notes: Handwritten or digital memos.
* Postcards: Short, informal messages.
Other Forms:
* Articles: News articles, magazine articles, journal articles, etc.
* Books: Fiction and non-fiction.
* Journals: Personal diaries, academic journals, etc.
* Scripts: Play scripts, movie scripts, etc.
* Speeches: Written speeches delivered orally.
* Advertisements: Marketing materials designed to promote products or services.
* Brochures: Informational materials about a product or service.
Beyond the written word:
* Charts and graphs: Visual representations of data.
* Diagrams: Visual representations of processes or concepts.
* Maps: Visual representations of geographic locations.
Note: Some forms of communication can overlap, such as a business email that could be considered formal or informal depending on the context.