Give one example each of 'oil water' and 'water oil' emulsion.

Explanation

To answer the question, we need to define emulsions and provide examples of both types: oil-water and water-oil emulsions.

### Step-by-Step Solution:

1. **Definition of Emulsion**:
- An emulsion is a mixture of two immiscible liquids where one liquid contains a dispersion of the other liquid. The two types of emulsions are classified based on which liquid is the continuous phase.

2. **Example of Oil-Water Emulsion**:
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