Charles's law vs Gay-Lussac's law

Charles's law and Gay-Lussac's law both are nouns.

Word	Noun	Adjective	Verb	Adverb
Charles's law	Yes	No	No	No
Gay-Lussac's law	Yes	No	No	No

As nouns, Charles's law and Gay-Lussac's law are synonyms defined as:

Charles's law and Gay-Lussac's law: (physics) the density of an ideal gas at constant pressure varies inversely with the temperature

Other synonyms of Charles's law include law of volumes.

Charles's law (noun)	Gay-Lussac's law (noun)
(physics) the density of an ideal gas at constant pressure varies inversely with the temperature	(physics) the density of an ideal gas at constant pressure varies inversely with the temperature