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substitution
 
Noun substitution has 2 senses
  1. substitution, permutation, transposition, replacement, switch - an event in which one thing is substituted for another; "the replacement of lost blood by a transfusion of donor blood"
    --1 is a kind of variation, fluctuation
    Derived forms: verb substitute2, verb substitute1
  2. substitution, exchange, commutation - the act of putting one thing or person in the place of another: "he sent Smith in for Jones but the substitution came too late to help"
    --2 is a kind of change
    --2 has particulars:
     replacement, replacing; subrogation; weaning, ablactation
    Derived form: verb substitute1
substation substitutability substitutable substitute substitute substituted substitutes substituting substitution substitution class substitutional substitutions for i am substorm substorms substract substraction substractive

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