reputation vs estimation

reputation and estimation both are nouns.

Word	Noun	Adjective	Verb	Adverb
reputation	Yes	No	No	No
estimation	Yes	No	No	No

As nouns, estimation is a hypernym of reputation; that is, estimation is a word with a broader meaning than reputation:

Other hypernyms of reputation include estimate.

reputation (noun)	estimation (noun)
the general estimation that the public has for a person	a judgment of the qualities of something or somebody
the state of being held in high esteem and honor	an approximate calculation of quantity or degree or worth
notoriety for some particular characteristic	the respect with which a person is held
	a document appraising the value of something (as for insurance or taxation)