Gene delivery is the process of introducing DNA or RNA into a cell. There are various ways to achieve gene delivery, including viral vectors, liposomes, electroporation, and nanotechnology-based methods. In scientific literature, gene delivery is often referred to as gene transfer, gene therapy, or gene transfection. Other synonyms for this term include genetic engineering, gene modification, gene editing, genetic manipulation, and DNA transduction. These synonyms reflect the broad range of techniques used to modify genetic material and their potential applications in medicine, agriculture, and biotechnology. The field of gene delivery is rapidly evolving, with new strategies and technologies being developed to improve the efficiency, specificity, and safety of gene transfer.