hyperpiesis vs essential hypertension

hyperpiesis and essential hypertension both are nouns.

Word	Noun	Adjective	Verb	Adverb
hyperpiesis	Yes	No	No	No
essential hypertension	Yes	No	No	No

As nouns, hyperpiesis and essential hypertension are synonyms defined as:

hyperpiesis and essential hypertension: persistent and pathological high blood pressure for which no specific cause can be found

Other synonyms of hyperpiesis include hyperpiesia.

hyperpiesis (noun)	essential hypertension (noun)
persistent and pathological high blood pressure for which no specific cause can be found	persistent and pathological high blood pressure for which no specific cause can be found