aviation medicine vs aerospace medicine

aviation medicine and aerospace medicine both are nouns.

Word	Noun	Adjective	Verb	Adverb
aviation medicine	Yes	No	No	No
aerospace medicine	Yes	No	No	No

As nouns, aviation medicine and aerospace medicine are synonyms defined as:

aviation medicine and aerospace medicine: the study and treatment of disorders associated with flight (especially with space flight)

Other synonyms of aviation medicine include aeromedicine.

aviation medicine (noun)	aerospace medicine (noun)
the study and treatment of disorders associated with flight (especially with space flight)	the study and treatment of disorders associated with flight (especially with space flight)