The document introduces research and provides definitions. Research is defined as a systematic process of investigation through re-searching to gain new knowledge. It can involve manipulating concepts, symbols, or things to generalize and extend knowledge. Research in academia aims to contribute to a field of knowledge through investigating a specific area, such as for MPhil, PhD, or educational assignments. Research is also categorized as general, descriptive, analytical, applied, fundamental, quantitative, qualitative, conceptual, empirical, field-based, or sources-based according to its functions, streams, or sources.