Yes, ununpentium and moscovium refer to the same chemical element, which has the atomic number 115. The name ‘ununpentium’ was a temporary placeholder name derived from the Latin prefix for ‘one’ (unus) and the Latin word for ‘five’ (pent). This naming convention is used for elements that have not yet been officially named.
In 2016, the International Union of Pure and Applied Chemistry (IUPAC) officially named ununpentium as ‘moscovium’ in honor of the Moscow region and the scientists involved in its discovery. Moscovium is a synthetic element, and it is highly unstable, with its most stable isotopes having very short half-lives.
In summary, while ununpentium is the former name, moscovium is the name currently accepted by the scientific community. They both refer to the same element, but moscovium is the recognized name that reflects its official standing in the periodic table.