From when judo (especially, the modern judo) and aikido emerged and became popular nationwide, the jujutsu handed down from its origin began to be called 'koryu jujutsu' to make a distinction between itself and the two.
柔道(特に現代柔道)、合気道が世に出、全国に普及して以降、これらと区別するため、日本古来の柔術を「古流柔術」という表現を用いて区別するようになった。