The word "kr" can refer to two different things in English, depending on the context. Let's break these down for clarity.
Definition: The Khmer Rouge was a communist organization that originated in Cambodia in 1970. It became infamous when it took over the capital city, Phnom Penh, in 1975, establishing a brutal regime responsible for the deaths of an estimated three million people during its rule. This period is known for its extreme violence and human rights abuses. The Khmer Rouge was eventually defeated by Vietnamese troops, but it continued to operate in some form until 1999.
Definition: Krypton is a colorless, odorless gas that is part of the noble gases group in the periodic table. It occurs in trace amounts in the Earth's atmosphere and is used in various applications, including lighting and photography.
The word "kr" can refer to either the Khmer Rouge, a historical communist organization in Cambodia, or krypton, a noble gas in chemistry.