The keyword "Pinterest" primarily functions as a proper noun. As a proper noun, it is the unique name of a specific entity: the social media platform and the corporation that operates it. This classification is its most fundamental and formal grammatical role, as it directly names the subject itself.
While its core identity is a proper noun, the term has evolved through a linguistic process known as anthimeria (or functional shift), where a word from one word class is used as another. Consequently, "Pinterest" is also commonly used informally as a verb and an adjective. As a verb, it means to add an image or content to a Pinterest board (e.g., "I will pinterest some recipes"). As an adjective, often in the form "Pinterest-worthy," it describes something that has an aesthetic or quality suitable for the platform (e.g., "She created a Pinterest-worthy centerpiece").
For the purpose of establishing a main point for an article, identifying "Pinterest" as a proper noun is the most crucial step. This foundational classification establishes the subject of the articlethe platform itself. The subsequent uses as a verb and an adjective are derivative concepts that describe actions and qualities related to the platform, but they are dependent on its primary existence as a named entity (the noun).
