Commutation
Part of speech: noun
Definition: A passing from one state to another; change; alteration; mutation. The act of giving one thing for another; barter; exchange. Substitution of one thing for another; interchange. Specifically, the substitution of one kind of payment for another, especially a switch to monetary payment from obligations of labour. The change to a lesser penalty or punishment by the State Substitution, as a means of discriminating between phonemes. The reversal of an electric current.
Substitution
Part of speech: noun
Definition: the act of substituting or the state of being substituteda substitute or replacement(especially in organic chemistry) the replacement of an atom, or group of atoms, in a compound, with another
Example sentence: The enemy of science is not religion. Religion comes in endless shapes and forms... The true enemy is the substitution of thought, reflection, and curiosity with dogma.