Single-nucleotide polymorphism or SNP is a commonly used term in genetics. SNPs are variations in a single nucleotide that occurs at a particular spot in the genetic code. However, there are synonyms for the word 'single-nucleotide polymorphism,' such as single base-pair variation, genetic variation, variant nucleotide, nucleotide substitution, and point mutation. Technological advances have made it possible to identify thousands of SNPs scattered throughout the human genome. The significance of SNPs in genetics has been studied extensively and is used in various research areas, such as disease susceptibility, drug response prediction, and biogeographic origin. In summary, the existence of synonyms for the word SNP shows the versatility and importance of genetic variations in scientific research.