comparative psychology vs animal psychology

comparative psychology and animal psychology both are nouns.

Word	Noun	Adjective	Verb	Adverb
comparative psychology	Yes	No	No	No
animal psychology	Yes	No	No	No

As nouns, comparative psychology and animal psychology are synonyms defined as:

comparative psychology and animal psychology: the branch of psychology concerned with the behavior of animals

comparative psychology (noun)	animal psychology (noun)
the branch of psychology concerned with the behavior of animals	the branch of psychology concerned with the behavior of animals