first-order correlation vs statistics

first-order correlation and statistics both are nouns.

Word	Noun	Adjective	Verb	Adverb
first-order correlation	Yes	No	No	No
statistics	Yes	No	No	No

first-order correlation (noun)	statistics (noun)
a partial correlation in which the effects of only one variable are removed (held constant)	a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters