Indo people, short for Indo-European people is a term that originated in the Dutch East Indies of the 19th century. It is used to describe the Eurasian people of mixed European and indigenous Indonesian ancestry in the Dutch East Indies, and their descendants, who generally are people of predominately European ancestry, as a result of migration to Western countries. People of Indo ancestry are now primarily found in the Netherlands and Indonesia, but also Australia, Canada, United States and New Zealand.

As a group Indos developed over a period of more than 400 years. Records from the beginning of European colonial activity in the South East Asian region show the range of the origins of the Europeans that settled there. People of Indo ancestry have a great variety of combinations of diverse European and Asian ancestries. The family names indicate the diversity of origins, although all family names are uniformly European.

Other common terms used for this group are Indische people or Dutch-Indonesians, both terms are derived from the Dutch term Indische Nederlanders.

The Basques (Basque: euskaldunak, Spanish: vascos, French: basques) as an ethnic group, primarily inhabit an area traditionally known as the Basque Country (Basque: Euskal Herria), a region that is located around the western end of the Pyrenees on the coast of the Bay of Biscay and straddles parts of north-central Spain and south-western France.

The Basques are known in the local languages as:

The English word Basque comes from French Basque (pronounced /bask/), which itself comes from Gascon Basco (pronounced /ˈbasku/) and Spanish Vasco^{[citation needed]} (pronounced /ˈbasko/). These, in turn, come from Latin Vasco (pronounced /wasko/), plural Vascones (see History section below). The Latin labial-velar approximant /w/ generally evolved into the bilabials /b/ and /β̞/ in Gascon and Spanish, probably under the influence of Basque and Aquitanian, a language related to old Basque and spoken in Gascony in Antiquity (similarly the Latin /w/ evolved into /v/ in French, Italian and other languages).

The Kurdish people, or Kurds (Kurdish: کورد Kurd), are an Iranic people native to the Middle East, mostly inhabiting a region known as Kurdistan, which includes adjacent parts of Iran, Iraq, Syria, and Turkey. They speak the Kurdish language, which is a member of the Iranian branch of Indo-European languages. The Kurds number about 30 million, the majority living in the Middle East, with significant Kurdish diaspora communities in the cities of western Turkey, in Armenia, Georgia, Israel, Azerbaijan, Russia, Lebanon and, in recent decades, some European countries and the United States. The Kurds are an indigenous ethnic minority in countries where the Kurdistan region is located, although they have enjoyed partial autonomy in Iraqi Kurdistan since 1991. An irredentist movement pushes for the creation of a Kurdish nation state.

The exact origins of the name, "Kurd", are unclear. Reynolds believes that the term Kurd is most likely related to the ancient term Qardu. The common root of Kurd and Qardu is first mentioned in a Sumerian tablet from the third millennium B.C. as the "land of Kar-da." Qardu is etymologically related to the Assyrian term Urartu corresponding to Ararat. According to Asatrian, the most reasonable explanation of this ethnonym is its possible connections with the Cyrtii (Cyrtaei)

The Indo-Iranian language group constitutes the easternmost extant branch of the Indo-European family of languages. It consists of three language groups: the Indo-Aryan, Iranian and Nuristani. The Indo-Iranian languages occasionally go by the term "Aryan languages." The speakers of the Proto-Indo-Iranian language, the hypothetical Proto-Indo-Iranians, are usually associated with the late 3rd millennium BC Andronovo and Sintashta-Petrovka cultures of Central Asia. Their expansion is believed to have been connected with the invention of the chariot.

The contemporary Indo-Iranian languages form the largest sub-branch of Indo-European, with more than one billion speakers in total, stretching from Europe (Romani) and the Caucasus (Ossetian) eastward to Xinjiang (Sarikoli) and Assam (Assamese) and south to Sri Lanka (Sinhalese). SIL in a 2005 estimate counts a total of 308 varieties, the largest in terms of native speakers being Hindustani (Hindi and Urdu, ca. 190-330 million), Bengali (ca. 190 million), Punjabi (ca. 88 million), Marathi (ca. 70 million), Persian (ca. 70 million), Pashto (ca. 50 million), Gujarati (ca. 46 million), Kurdish (ca. 16-30 million), Bhojpuri (ca. 35 million), Awadhi (ca. 35 million), Maithili (ca. 35 million), Oriya (ca. 32 million), Marwari (ca. 31 million), Sindhi (ca. 21 million), Rajasthani (ca. 20 million), Chhattisgarhi (ca. 17 million), Assamese (ca. 17 million), Sinhalese (ca. 16 million), and Rangpuri (ca. 15 million).