English law
Common law is a term with historical origins in the legal system of England. It denotes, in the first place, the judge-made law that developed from the early Middle Ages as described in a work published at the end of the 19th century, "The History of English Law before the Time of Edward I", in which Pollock and Maitland expanded the work of Coke (17th century) and Blackstone (18th century). Specifically, the law developed in England's Court of Common Pleas and other common law courts, which became also the law of the colonies settled initially under the crown of England or, later, of the United Kingdom, in North America and elsewhere; and this law as further developed after those courts in England were reorganised by the Supreme Court of Judicature Acts passed in the 1870s, and developed independently, in the legal systems of the United States and other jurisdictions, after their independence from the United Kingdom, before and after the 1870s. The term is used, in the second place, to denote the law developed by those courts, in the same periods (pre-colonial, colonial and post-colonial), as distinct from within the jurisdiction, or former jurisdiction, of other courts in England: the Court of Chancery, the ecclesiastical courts, and the Admiralty court.
Civil law (legal system)
Civil law, or civilian law, is a legal system originating in Europe, intellectualized within the framework of Roman law, the main feature of which is that its core principles are codified into a referable system which serves as the primary source of law. This can be contrasted with common law systems, the intellectual framework of which comes from judge-made decisional law, and gives precedential authority to prior court decisions, on the principle that it is unfair to treat similar facts differently on different occasions (doctrine of judicial precedent, or "stare decisis").