psychometrics vs psychometrika

psychometrics and psychometrika both are nouns.

Word	Noun	Adjective	Verb	Adverb
psychometrics	Yes	No	No	No
psychometrika	Yes	No	No	No

As nouns, psychometrics and psychometrika are synonyms defined as:

psychometrics and psychometrika: any branch of psychology concerned with psychological measurements

Other synonyms of psychometrics include psychometry.

psychometrics (noun)	psychometrika (noun)
any branch of psychology concerned with psychological measurements	any branch of psychology concerned with psychological measurements