general relativity theory vs general relativity

general relativity theory and general relativity both are nouns.

Word	Noun	Adjective	Verb	Adverb
general relativity theory	Yes	No	No	No
general relativity	Yes	No	No	No

As nouns, general relativity theory and general relativity are synonyms defined as:

general relativity theory and general relativity: a generalization of special relativity to include gravity (based on the principle of equivalence)

Other synonyms of general relativity theory include Einstein's general theory of relativity, general theory of relativity.

general relativity theory (noun)	general relativity (noun)
a generalization of special relativity to include gravity (based on the principle of equivalence)	a generalization of special relativity to include gravity (based on the principle of equivalence)