biserial correlation vs biserial correlation coefficient

biserial correlation and biserial correlation coefficient both are nouns.

Word	Noun	Adjective	Verb	Adverb
biserial correlation	Yes	No	No	No
biserial correlation coefficient	Yes	No	No	No

As nouns, biserial correlation and biserial correlation coefficient are synonyms defined as:

biserial correlation and biserial correlation coefficient: a correlation coefficient in which one variable is many-valued and the other is dichotomous

biserial correlation (noun)	biserial correlation coefficient (noun)
a correlation coefficient in which one variable is many-valued and the other is dichotomous	a correlation coefficient in which one variable is many-valued and the other is dichotomous