pathology vs medical science

pathology and medical science both are nouns.

Word	Noun	Adjective	Verb	Adverb
pathology	Yes	No	No	No
medical science	Yes	No	No	No

As nouns, medical science is a hypernym of pathology; that is, medical science is a word with a broader meaning than pathology:

pathology: the branch of medical science that studies the causes and nature and effects of diseases
medical science: the science of dealing with the maintenance of health and the prevention and treatment of disease

pathology (noun)	medical science (noun)
the branch of medical science that studies the causes and nature and effects of diseases	the science of dealing with the maintenance of health and the prevention and treatment of disease
any deviation from a healthy or normal condition