heat content vs total heat

heat content and total heat both are nouns.

Word	Noun	Adjective	Verb	Adverb
heat content	Yes	No	No	No
total heat	Yes	No	No	No

As nouns, heat content and total heat are synonyms defined as:

heat content and total heat: (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure

Other synonyms of heat content include enthalpy, H.

heat content (noun)	total heat (noun)
(thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure	(thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure