Differentiate between the following pairs on the basis of what is given in the brackets:
Pharynx and Alveolus (Location).

Explanation

### Step-by-Step Solution:

1. **Definition of Pharynx**:
- The pharynx, commonly known as the throat, is a muscular tube that connects the nasal cavity to the larynx and esophagus. It serves as a passageway for both air and food.

2. **Location of Pharynx**:
- The pharynx is located in the throat, extending from the base of the skull down to the level of the sixth cervical vertebra.

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