pediatrics vs medical specialty

pediatrics and medical specialty both are nouns.

Word	Noun	Adjective	Verb	Adverb
pediatrics	Yes	No	No	No
medical specialty	Yes	No	No	No

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

pediatrics: the branch of medicine concerned with the treatment of infants and children
medical specialty: the branches of medical science that deal with nonsurgical techniques

Other hypernyms of pediatrics include medicine.

pediatrics (noun)	medical specialty (noun)
the branch of medicine concerned with the treatment of infants and children	the branches of medical science that deal with nonsurgical techniques