conservation of electricity vs conservation of charge

conservation of electricity and conservation of charge both are nouns.

Word	Noun	Adjective	Verb	Adverb
conservation of electricity	Yes	No	No	No
conservation of charge	Yes	No	No	No

As nouns, conservation of electricity and conservation of charge are synonyms defined as:

conservation of electricity and conservation of charge: the principle that the total electric charge of a system remains constant despite changes inside the system

conservation of electricity (noun)	conservation of charge (noun)
the principle that the total electric charge of a system remains constant despite changes inside the system	the principle that the total electric charge of a system remains constant despite changes inside the system