A basic law is either a codified constitution, or in countries with uncodified constitutions, a law designed to have the effect of a constitution. The term basic law is used in some places as an alternative to "constitution" and may be intended as a temporary but necessary measure, until the formal enactment of a constitution. "Basic law" is sometimes used to avoid it being taken to be, like a constitution, "the highest law". There may be various reasons, such as religion, for this.
German president warns democracy faces new challenges
Leading the 75th anniversary celebrations of Germany's constitution, President Steinmeier has spoken on the role of the "Basic Law"..
Deutsche Welle