mm Hg vs torr

mm Hg and torr both are nouns.

Word	Noun	Adjective	Verb	Adverb
mm Hg	Yes	No	No	No
torr	Yes	No	No	No

As nouns, mm Hg and torr are synonyms defined as:

mm Hg and torr: a unit of pressure equal to 0.001316 atmosphere; named after Torricelli

Other synonyms of mm Hg include millimeter of mercury.

mm Hg (noun)	torr (noun)
a unit of pressure equal to 0.001316 atmosphere; named after Torricelli	a unit of pressure equal to 0.001316 atmosphere; named after Torricelli