Original: They established the principles and basic techniques of partition chromatography, and their work encouraged the rapid development of several types of chromatography method: paper chromatography, gas chromatography, and what would become known as high performance liquid chromatography.
Simplified: High-performance liquid chromatography (HPLC) is also sometimes referred to as high-pressure liquid chromatography. It is column chromatography run under pressure to raise the speed of the process.