The term "knowledge gap" refers to a lack or absence of knowledge in a particular area. It is an acknowledgement that there are areas where we do not have all the information, and it highlights the need for further research or investigation to fill those gaps. Knowledge gaps can occur due to many reasons such as limited access to resources, lack of interest from experts, or simply because a topic has only recently emerged as an area of study. Identifying knowledge gaps is important in order to direct future research efforts and ensure that we are continually expanding our understanding of the world around us.