Write two differences between 'order of reaction' and 'molecularity of reaction'.

Explanation

### Step-by-Step Solution:

1. **Definition of Order of Reaction**:
- The order of a reaction is defined as the sum of the powers (exponents) of the concentration terms in the rate law expression. It reflects how the rate of reaction depends on the concentration of the reactants.
- For example, in a reaction where the rate law is given by:
\[ \text{Rate} = k[A]^m[B]^n \]
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