`K_(b)` of p-methylaniline is more / less than aniline.

Explanation

To determine whether the base dissociation constant (K_b) of p-methylaniline is more or less than that of aniline, we need to analyze the basicity of both compounds.

### Step-by-Step Solution:

1. **Understand the Concept of Basicity**:
- Basicity refers to the ability of a compound to accept protons (H⁺ ions). The stronger the base, the higher the K_b value.

2. **Identify the Structures**:
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