Presocratic is a term used to describe a period in ancient Greek philosophy that predates Socrates. During this time, philosophers focused on the natural world and the cosmos. Some synonyms for presocratic include pre-Socratic, preplatonic, and early Greek philosophy. These terms can be used interchangeably to describe the same period in philosophy. Other related words include Ionian, Milesian, Eleatic, Pythagorean, and Heraclitean. Each of these terms refers to a specific group or individual within the presocratic period. Together, these synonyms provide a broad overview of one of the most influential periods in Western philosophy.