child psychology vs genetic psychology

child psychology and genetic psychology both are nouns.

Word	Noun	Adjective	Verb	Adverb
child psychology	Yes	No	No	No
genetic psychology	Yes	No	No	No

As nouns, child psychology and genetic psychology are synonyms defined as:

child psychology and genetic psychology: the branch of psychology that studies the social and mental development of children

Other synonyms of child psychology include developmental psychology.

child psychology (noun)	genetic psychology (noun)
the branch of psychology that studies the social and mental development of children	the branch of psychology that studies the social and mental development of children