STD vs doctorate

STD and doctorate both are nouns.

Word	Noun	Adjective	Verb	Adverb
STD	Yes	No	No	No
doctorate	Yes	No	No	No

As nouns, doctorate is a hypernym of STD; that is, doctorate is a word with a broader meaning than STD:

STD: a doctor's degree in theology in the pontifical university system of the Catholic church
doctorate: one of the highest earned academic degrees conferred by a university

Other hypernyms of STD include doctor's degree.

STD (noun)	doctorate (noun)
a doctor's degree in theology in the pontifical university system of the Catholic church	one of the highest earned academic degrees conferred by a university
a communicable infection transmitted by sexual intercourse or genital contact