Ethnologue: Languages of the World is an annual reference publication in print and online that provides statistics and other information on the living languages of the world. It is the world's most comprehensive catalogue of languages. It was first issued in 1951, and is now published by SIL International, an American evangelical Christian non-profit organization.
A language family is a group of languages related through descent from a common ancestor, called the proto-language of that family. The term family is a metaphor borrowed from biology, with the tree model used in historical linguistics analogous to a family tree, or to phylogenetic trees of taxa used in evolutionary taxonomy. Linguists thus describe the daughter languages within a language family as being genetically related. The divergence of a proto-language into daughter languages typically occurs through geographical separation, with different regional dialects of the proto-language undergoing different language changes and thus becoming distinct languages over time.
A creole language, or simply creole, is a stable natural language that develops from the process of different languages simplifying and mixing into a new form, and then that form expanding and elaborating into a full-fledged language with native speakers, all within a fairly brief period. While the concept is similar to that of a mixed or hybrid language, creoles are often characterized by a tendency to systematize their inherited grammar. Like any language, creoles are characterized by a consistent system of grammar, possess large stable vocabularies, and are acquired by children as their native language. These three features distinguish a creole language from a pidgin. Creolistics, or creology, is the study of creole languages and, as such, is a subfield of linguistics. Someone who engages in this study is called a creolist.
The United States does not have an official language at the federal level, but the most commonly used language is English, which is the de facto national language. In addition, 32 U.S. states out of 50 and all five U.S. territories have declared English as an official language. The majority of the U.S. population (78%) speaks only English at home as of 2023, according to the American Community Survey (ACS) of the U.S. Census Bureau. The remainder of the population speaks many other languages at home, most notably Spanish. Asian languages such as Chinese, Tagalog, and Vietnamese are also widely spoken, in addition to the Indigenous languages of Native Americans, Alaska Natives, Native Hawaiians, and native populations in the U.S. unincorporated territories. Many languages were brought into the United States during its earliest history from Europe, Africa, Asia, other parts of the Americas, and Oceania, with some of them developing into dialects, creole languages, and pidgin languages. American Sign Language (ASL) and Interlingua, an international auxiliary language, were created in the United States.
A lingua franca, also known as a bridge language, common language, trade language, auxiliary language, link language or language of wider communication (LWC), is a language systematically used to make communication possible between groups of people who do not share a native language or dialect, particularly when it is a third language that is distinct from both of the speakers' native languages.
Asia is home to hundreds of languages comprising several families and some unrelated isolates. The most spoken language families on the continent include Austroasiatic, Austronesian, Japonic, Dravidian, Indo-European, Afroasiatic, Turkic, Sino-Tibetan, Kra–Dai and Koreanic. Many languages of Asia, such as Chinese, Persian, Sanskrit, Arabic, Tamil or Telugu, have a long history as a written language.
An extinct language or dead language is a language with no living native speakers. A dormant language is a dead language that still serves as a symbol of ethnic identity to an ethnic group; these languages are often undergoing a process of revitalisation. Languages that have first-language speakers are known as modern or living languages to contrast them with dead languages, especially in educational contexts.
Pakistan is a multilingual country with over 70 languages spoken as first languages. The majority of Pakistan's languages belong to the Indo-Iranian group of the Indo-European language family.
ISO 639-2:1998, Codes for the representation of names of languages — Part 2: Alpha-3 code, is the second part of the ISO 639 standard, which lists codes for the representation of the names of languages. The three-letter codes given for each language in this part of the standard are referred to as "Alpha-3" codes. There are 487 entries in the list of ISO 639-2 codes.
Portuguese creoles are creole languages which have Portuguese as their substantial lexifier. The most widely-spoken creoles influenced by Portuguese are Cape Verdean Creole, Guinea-Bissau Creole and Papiamento.
Language contact occurs when speakers of two or more languages or varieties interact with and influence each other. The study of language contact is called contact linguistics. Language contact can occur at language borders, between adstratum languages, or as the result of migration, with an intrusive language acting as either a superstratum or a substratum.
Hawaiʻi Sign Language or Hawaiian Sign Language, also known as Hoailona ʻŌlelo, Old Hawaiʻi Sign Language and Hawaiʻi Pidgin Sign Language, is an indigenous sign language native to Hawaiʻi. Historical records document its presence on the islands as early as the 1820s, but HSL was not formally recognized by linguists until 2013.
ISO 639-3:2007, Codes for the representation of names of languages – Part 3: Alpha-3 code for comprehensive coverage of languages, is an international standard for language codes in the ISO 639 series. It defines three-letter codes for identifying languages. The standard was published by International Organization for Standardization (ISO) on 1 February 2007.
The languages of the Caribbean reflect the region's diverse history and culture. There are six official languages spoken in the Caribbean:
Spurious languages are languages that have been reported as existing in reputable works, while other research has reported that the language in question did not exist. Some spurious languages have been proven to not exist. Others have very little evidence supporting their existence, and have been dismissed in later scholarship. Others still are of uncertain existence due to limited research.
Glottolog is an open-access online bibliographic database of the world's languages. In addition to listing linguistic materials describing individual languages, the database also contains the most up-to-date language affiliations based on the work of expert linguists.
