essential hypertension vs hyperpiesia

essential hypertension and hyperpiesia both are nouns.

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

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

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

Other synonyms of essential hypertension include hyperpiesis.

essential hypertension (noun)	hyperpiesia (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