Difference between Principle and Theory

What is the difference between Principle and Theory?

Principle as a noun is a fundamental assumption. while Theory as a noun is an unproven conjecture.

Principle

Part of speech: noun

Definition: A fundamental assumption. A rule used to choose among solutions to a problem. Moral rule or aspect. A rule or law of nature, or the basic idea on how the laws of nature are applied. A fundamental essence, particularly one producing a given quality. A beginning.

Theory

Part of speech: noun

Definition: An unproven conjecture.An expectation of what should happen, barring unforeseen circumstances.A coherent statement or set of statements that attempts to explain observed phenomena.A logical structure that enables one to deduce the possible results of every experiment that falls within its purview.A field of study attempting to exhaustively describe a particular class of constructs.A set of axioms together with all statements derivable from them.

We hope you now know whether to use Principle or Theory in your sentence.

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