correlate vs related

correlate is a noun but related is not a noun.

Word	Noun	Adjective	Verb	Adverb
correlate	Yes	Yes	Yes	No
related	No	Yes	No	No

correlate (noun)	related (noun)
either of two or more related or complementary variables

correlate (adjective)	related (adjective)
mutually related	connected by kinship, common origin, or marriage
	being connected either logically or causally or by shared characteristics

correlate (verb)	related (verb)
bring into a mutual, complementary, or reciprocal relation
to bear a reciprocal or mutual relation