phi correlation vs fourfold point correlation

phi correlation and fourfold point correlation both are nouns.

Word	Noun	Adjective	Verb	Adverb
phi correlation	Yes	No	No	No
fourfold point correlation	Yes	No	No	No

As nouns, phi correlation and fourfold point correlation are synonyms defined as:

phi correlation and fourfold point correlation: an index of the relation between any two sets of scores that can both be represented on ordered binary dimensions (e.g., male-female)

Other synonyms of phi correlation include phi coefficient.

phi correlation (noun)	fourfold point correlation (noun)
an index of the relation between any two sets of scores that can both be represented on ordered binary dimensions (e.g., male-female)	an index of the relation between any two sets of scores that can both be represented on ordered binary dimensions (e.g., male-female)