Yaghnob River in the context of "Yaghnobis"

Yaghnobi is an Eastern Iranian language spoken in the upper valley of the Yaghnob River in the Zarafshan area of Tajikistan by the Yaghnobi people. It is considered to be a direct descendant of Sogdian and has sometimes been called Neo-Sogdian in academic literature. There are some 12,500 Yaghnobi speakers, divided into several communities. The principal group lives in the Zafarobod area. There are also resettlers in the Yaghnob Valley. Some communities live in the villages of Zumand and Kůkteppa and in Dushanbe or its vicinity.

Most Yaghnobi speakers are bilingual in Tajik, a dialect of Persian. Yaghnobi is mostly used for daily family communication, and Tajik is used by Yaghnobi-speakers for business and formal transactions. A Russian ethnographer was told by nearby Tajiks, long hostile to the Yaghnobis, who were late to adopt Islam, that the Yaghnobis used their language as a "secret" mode of communication to confuse the Tajiks. The account led to the assumption by some that Yaghnobi or some derivative of it was used as a secret code.

Salammoniac, also sal ammoniac or salmiac, is a rare naturally occurring mineral composed of ammonium chloride, NH₄Cl. It forms colorless, white, or yellow-brown crystals in the isometric-hexoctahedral class. It has very poor cleavage and is brittle to conchoidal fracture. It is quite soft, with a Mohs hardness of 1.5 to 2, and it has a low specific gravity of 1.5. It is water-soluble. Salammoniac is also the archaic name for the chemical compound ammonium chloride.