What is the difference between a nucleoside and a nucleotide ?

Explanation

To understand the difference between a nucleoside and a nucleotide, we can break it down into several key points:

### Step 1: Define Nucleoside
A **nucleoside** is a compound that consists of two main components:
- A **nitrogenous base** (which can be adenine, guanine, cytosine, thymine, or uracil).
- A **pentose sugar** (which can be ribose in RNA or deoxyribose in DNA).

### Step 2: Define Nucleotide
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