Difference between Approximation and Estimate

Approximation

Part of speech: noun

Definition: The act, process or result of approximating. An imprecise solution or result that is adequate for a defined purpose. The act of bringing together the edges of tissue to be sutured.

Estimate

Part of speech: noun

Definition: A rough calculation or guess.A document (or verbal notification) specifying how much a job will probably cost.

Part of speech: verb

Definition: to calculate roughly, often from imperfect data

Example sentence: I measure in my palm and use my eyes to estimate amounts; a tablespoon is a full palm of dried spices.