HI0{"id":5062,"date":"2024-05-20T11:25:02","date_gmt":"2024-05-20T11:25:02","guid":{"rendered":"https:\/\/www.trinka.ai\/blog\/?p=5062"},"modified":"2026-04-29T11:26:00","modified_gmt":"2026-04-29T11:26:00","slug":"what-is-a-proper-noun","status":"publish","type":"post","link":"https:\/\/www.trinka.ai\/blog\/what-is-a-proper-noun\/","title":{"rendered":"What Is a Proper Noun? Definition, Rules, and Examples"},"content":{"rendered":"

A proper noun is a noun that names a specific, unique entity \u2014 a particular person, place, organization, or thing \u2014 as opposed to a general class. Proper nouns are always capitalized in English, regardless of their position in the sentence.<\/p>\n

Table of Contents<\/p>\n

Common errors related to proper nouns<\/a>

References<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n

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Common noun<\/strong><\/td>\n	Proper noun<\/strong><\/td>\n<\/tr>\n
city<\/em><\/td>\n	London, Buenos Aires<\/em><\/td>\n<\/tr>\n
scientist<\/em><\/td>\n	Marie Curie, Charles Darwin<\/em><\/td>\n<\/tr>\n
river<\/em><\/td>\n	the Amazon, the Thames<\/em><\/td>\n<\/tr>\n
company<\/em><\/td>\n	Tesla, IKEA<\/em><\/td>\n<\/tr>\n
language<\/em><\/td>\n	Spanish, Mandarin<\/em><\/td>\n<\/tr>\n
month<\/em><\/td>\n	October, March<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n The common noun names a category; the proper noun names a specific member of that category.<\/p>\n <\/span>Categories of proper nouns<\/span><\/h1>\n Proper nouns include: names of people (Albert Einstein, Malala Yousafzai<\/em>), geographic names<\/p>\n (Mount Everest, Pacific Ocean, Brazil<\/em>), organizational names (the United Nations, Oxford<\/em><\/p>\n University Press<\/em>), names of specific documents or works (the Magna Carta, the Declaration of<\/em><\/p>\n Independence<\/em>), brand names (Google, iPhone<\/em>), names of historical events or periods (the<\/em><\/p>\n Renaissance, World War II<\/em>), and days, months, and holidays (Monday, December, Thanksgiving<\/em>).<\/p>\n <\/span>Capitalization rules that follow from proper noun status<\/span><\/h1>\n When a common noun is used as part of a proper name, it is capitalized: the Amazon River <\/em>(proper), a river in South America<\/em> (common). When the proper name is dropped and only the common noun remains, the common noun reverts to lowercase: The Mississippi is the longest river in the United States; the river rises in Minnesota.<\/em><\/p>\n The same principle applies to titles: President Biden<\/em> (title + proper name, capitalized) vs. the president gave a speech<\/em> (common noun, lowercase).<\/p>\n <\/span>Proper adjectives<\/span><\/h1>\n Proper adjectives are adjectives formed from proper nouns. They are also capitalized: Shakespearean<\/em>, Victorian<\/em>, Freudian<\/em>, Parisian<\/em>. When the connection to the proper noun has faded and the word has become fully integrated into the general vocabulary, it is sometimes lowercased: quixotic<\/em>, herculean<\/em>, mercurial<\/em> have all undergone this process.<\/p>\n <\/span>Common errors related to proper nouns<\/span><\/h1>\n Inconsistent capitalization<\/strong>: failing to capitalize a proper noun, or capitalizing a common noun unnecessarily (the University offers several courses<\/em> \u2014 if University<\/em> refers to a generic institution rather than a specific university’s proper name, it should be lowercase).<\/p>\n Possessives of proper nouns ending in -s<\/em><\/strong>: Chicago style adds ‘s<\/em> (Charles’s<\/em>); AP style often adds only ‘<\/em> (Charles’<\/em>). Be consistent and follow the relevant style guide.<\/p>\n Trinka’s <\/em>g<\/em><\/a>rammar checker<\/em><\/a> identifies capitalization errors involving proper nouns and proper adjectives in academic and professional writing.<\/em><\/p>\n <\/span>References<\/span><\/h2>\n The Chicago Manual of Style Online. (2017). University of Chicago Press.<\/p>\n Garner, B. A. (2016). Garner’s Modern English Usage<\/em> (4th ed.). Oxford University Press.<\/p>\n","protected":false},"excerpt":{"rendered":" Learn what a proper noun is, the rules for using them, and see clear examples in this comprehensive guide. Improve your writing by mastering proper nouns today!<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[175],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/posts\/5062"}],"collection":[{"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/comments?post=5062"}],"version-history":[{"count":2,"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/posts\/5062\/revisions"}],"predecessor-version":[{"id":6693,"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/posts\/5062\/revisions\/6693"}],"wp:attachment":[{"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/media?parent=5062"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/categories?post=5062"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/tags?post=5062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}