regaining vs restoration

regaining and restoration both are nouns.

Word	Noun	Adjective	Verb	Adverb
regaining	Yes	No	No	No
restoration	Yes	No	No	No

As nouns, regaining and restoration are synonyms defined as:

Other synonyms of regaining include restitution, return.

regaining (noun)	restoration (noun)
getting something back again	the act of restoring something or someone to a satisfactory state
	getting something back again
	some artifact that has been restored or reconstructed
	a model that represents the landscape of a former geological age or that represents and extinct animal etc.
	the state of being restored to its former good condition