gravitational constant vs universal gravitational constant

gravitational constant and universal gravitational constant both are nouns.

Word	Noun	Adjective	Verb	Adverb
gravitational constant	Yes	No	No	No
universal gravitational constant	Yes	No	No	No

As nouns, gravitational constant and universal gravitational constant are synonyms defined as:

gravitational constant and universal gravitational constant: (physics) the universal constant relating force to mass and distance in Newton's law of gravitation

Other synonyms of gravitational constant include constant of gravitation, G.

gravitational constant (noun)	universal gravitational constant (noun)
(physics) the universal constant relating force to mass and distance in Newton's law of gravitation	(physics) the universal constant relating force to mass and distance in Newton's law of gravitation