sub-test vs psychometric test

sub-test and psychometric test both are nouns.

Word	Noun	Adjective	Verb	Adverb
sub-test	Yes	No	No	No
psychometric test	Yes	No	No	No

As nouns, psychometric test is a hypernym of sub-test; that is, psychometric test is a word with a broader meaning than sub-test:

sub-test: one of a battery of related tests
psychometric test: any standardized procedure for measuring sensitivity or memory or intelligence or aptitude or personality etc

Other hypernyms of sub-test include mental test, mental testing, test.

sub-test (noun)	psychometric test (noun)
one of a battery of related tests	any standardized procedure for measuring sensitivity or memory or intelligence or aptitude or personality etc