Preliminary study refers to a preliminary or initial exploration of a subject or topic. Synonyms for the term include exploratory research, initial research, preliminary investigation, pilot study, feasibility study, and scoping study. Exploratory research involves gathering information and collecting data on a subject. Initial research refers to the process of conducting research for the first time in a particular area. A preliminary investigation is similar to a pilot study and aims to assess the feasibility of research. A feasibility study explores whether a project is worth pursuing. A scoping study outlines the parameters and scope of research. These terms all relate to conducting research or exploring a subject in its initial stages.