Biserial correlation is a statistical method used to measure the relationship between a binary variable and a continuous variable. It is also known as point-biserial correlation. Some of the synonyms for biserial correlation include biserial point correlation, Pearson biserial correlation, and dichotomous correlation. Other related terms include tetrachoric correlation, which is used to measure the relationship between two binary variables, and phi coefficient, which is a measure of association between two binary variables. Understanding these different statistical methods can be helpful in analyzing data and drawing meaningful conclusions about the relationships between variables.