estimation vs estimate

estimation and estimate both are nouns.

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

As nouns, estimation and estimate are synonyms defined as:

estimation and estimate: a judgment of the qualities of something or somebody

As nouns, estimation and estimate are synonyms defined as:

estimation and estimate: an approximate calculation of quantity or degree or worth

Other synonyms of estimation include approximation, idea.

As nouns, estimation and estimate are synonyms defined as:

As nouns, estimation and estimate are synonyms defined as:

estimation and estimate: a document appraising the value of something (as for insurance or taxation)

Other synonyms of estimation include appraisal.

estimation (noun)	estimate (noun)
a judgment of the qualities of something or somebody	a judgment of the qualities of something or somebody
an approximate calculation of quantity or degree or worth	an approximate calculation of quantity or degree or worth
the respect with which a person is held	the respect with which a person is held
a document appraising the value of something (as for insurance or taxation)	a document appraising the value of something (as for insurance or taxation)
	a statement indicating the likely cost of some job

estimation (verb)	estimate (verb)
	judge tentatively or form an estimate of (quantities or time)
	judge to be probable