This document discusses and compares natural science and social science. It notes that both are considered real sciences but have different origins, subjects of study, and limitations. Natural science deals with natural events using scientific methods that originated during the Renaissance, while social science emerged in the late 19th century to study human society and social interactions using methods like observation, experiments, interviews and surveys. Key differences include natural science aiming to discover natural laws through fields like physics and chemistry, while social science must interpret human behavior and faces challenges in controlling variables.