doctorate vs doctor's degree

doctorate and doctor's degree both are nouns.

Word	Noun	Adjective	Verb	Adverb
doctorate	Yes	No	No	No
doctor's degree	Yes	No	No	No

As nouns, doctorate and doctor's degree are synonyms defined as:

doctorate and doctor's degree: one of the highest earned academic degrees conferred by a university

doctorate (noun)	doctor's degree (noun)
one of the highest earned academic degrees conferred by a university	one of the highest earned academic degrees conferred by a university