Challenge 52 in 52: Kurdish

Kurdish is a language or a group of languages spoken by Kurds in the geo-cultural region of Kurdistan and the Kurdish diaspora. Kurdish languages belong to Western Iranian languages in the Indo-European language family. The main three dialects or languages of Kurdish are Northern Kurdish (Kurmanji), Central Kurdish (Sorani), and Southern Kurdish (Xwarîn). The majority of the Kurds speak Kurmanji, and most Kurdish texts are written in Kurmanji and Sorani. Kurmanji is written in the Hawar alphabet, a derivation of the Latin script, and Sorani is written in the Sorani alphabet, a derivation of Arabic script.

Omniglot article about Kurdish

Challenge 52 in 52: Romani

Romani is an Indo-Aryan macrolanguage of the Romani communities. According to Ethnologue, seven varieties of Romani are divergent enough to be considered languages of their own. The largest of these are Vlax Romani (about 500,000 speakers), Balkan Romani (600,000), and Sinte Romani (300,000). Some Romani communities speak mixed languages based on the surrounding language with retained Romani-derived vocabulary – these are known by linguists as Para-Romani varieties, rather than dialects of the Romani language itself. The differences between the various varieties can be as large as, for example, the differences between the Slavic languages.

Speakers of the Romani language usually refer to the language as rromani ćhib "the Romani language" or romanes "in a Rom way". This derives from the Romani word rom, meaning either "a member of the (Romani) group" or "husband". This is also the origin of the term "Roma" in English, although some Roma groups refer to themselves using other demonyms (e.g. 'Kaale', 'Sinti').

Romani language in Omniglot

52 in 52: Lombard

The Lombard language belongs to the Gallo-Italic family and is a cluster of homogeneous dialects that are spoken by millions of speakers in Northern Italy and southern Switzerland. The language is also spoken in Santa Catarina in Brazil by Lombard immigrants from the Province of Bergamo, in Italy.

The most ancient linguistic substratum that has left a mark on the Lombard language is that of the ancient Ligures. However, available information about the ancient language and its influence on modern Lombard is extremely vague and limited. That is in sharp contrast to the influence left by the Celts, who settled in Northern Italy and brought their Celtic languages and culturally and linguistically Celticised the Ligures. The Celtic substratum of modern Lombard and the neighbouring languages of Northern Italy is self-evident and so the Lombard language is classified as a Gallo-Italic language (from the ancient Roman name for the Celts, Gauls).

Challenge 52 in 52: Sanskrit

Sanskrit is a classical language belonging to the Indo-Aryan branch of the Indo-European languages. It arose in South Asia after its predecessor languages had diffused there from the northwest in the late Bronze Age.  Sanskrit is the sacred language of Hinduism, the language of classical Hindu philosophy, and of historical texts of Buddhism and Jainism. It was a link language in ancient and medieval South Asia, and upon transmission of Hindu and Buddhist culture to Southeast Asia, East Asia, and Central Asia in the early medieval era, it became a language of religion and high culture, and of the political elites in some of these regions. As a result, Sanskrit had a lasting effect on the languages of South Asia, Southeast Asia, and East Asia, especially in their formal and learned vocabularies. 

Sanskrit generally connotes several Old Indo-Aryan language varieties. The most archaic of these is the Vedic Sanskrit found in the Rigveda, a collection of 1,028 hymns composed between 1500 BCE and 1200 BCE by Indo-Aryan tribes migrating east from what is today Afghanistan across northern Pakistan and into northwestern India. Vedic Sanskrit interacted with the preexisting ancient languages of the subcontinent, absorbing names of newly encountered plants and animals; in addition, the ancient Dravidian languages influenced Sanskrit's phonology and syntax. Sanskrit became tradition-bound, stopped being learned as a first language, and ultimately stopped developing as a living language.