psychometry vs psychometrika

psychometry and psychometrika both are nouns.

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

As nouns, psychometry and psychometrika are synonyms defined as:

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

Other synonyms of psychometry include psychometrics.

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