The difference between a single-nucleotide polymorphism (SNP) and a point mutation is that:

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A point mutation is a change in a single nucleotide in the DNA sequence, resulting in a different base pair being incorporated permanently into the genome. In contrast, an SNP is a variation in a single nucleotide that occurs at a specific position in the genome and is present in a significant proportion of the population. Therefore, while both involve changes in a single nucleotide, a point mutation is a change in a specific individual's genome, while an SNP is a difference in the genome between individuals in a population.

The Difference Between a Single-Nucleotide Polymorphism (SNP) and a Point