estimation vs figuring

estimation and figuring both are nouns.

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

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

Other hypernyms of estimation include calculation, computation, reckoning.

estimation (noun)	figuring (noun)
a judgment of the qualities of something or somebody	problem solving that involves numbers or quantities
an approximate calculation of quantity or degree or worth
the respect with which a person is held
a document appraising the value of something (as for insurance or taxation)