Limestone high quality quarried limestone, called Indiana limestone. Many famous buildings in London are built from Portland limestone. Limestone was also a very popular building block in the Middle Ages in the areas where it occurred, since it is hard, durable, and commonly occurs in easily accessible surface exposures. Many medieval churches and castles in Europe are made of limestone. Beer stone was a popular kind of limestone for medieval buildings in southern England. Limestone and (to a lesser extent) marble are reactive to acid solutions, making acid rain a significant problem to the preservation of artifacts made from this stone.
Koine Greek is also known as "Biblical", "New Testament", "ecclesiastical" or "patristic" Greek. It continues to be used as the liturgical language of services in the Greek Orthodox Church. The English-language name "Koine" derives from the Koine Greek term "he koinè diálektos", "the common dialect". The Greek word "koinē" () itself means "common". The word is pronounced , or in US English and in UK English. The pronunciation of the word in Koine itself gradually changed from (close to the Classical Attic pronunciation ) to (close to the Modern Greek ). In Greek, the language has been referred to as Ελληνιστική Κοινή,