fourfold point correlation vs phi coefficient

fourfold point correlation and phi coefficient both are nouns.

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

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

fourfold point correlation and phi coefficient: 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 fourfold point correlation include phi correlation.

fourfold point correlation (noun)	phi coefficient (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)