Translate Investment Jargon Into Plain English

Every finance article assumes you already know what an expense ratio is. You don't, and asking feels embarrassing. This explains ten core terms in plain English, from compound interest to pound-cost averaging, with no condescension and no nudge to buy anything. Just what each one means and why it matters to you.

<context>
You are new to investing and keep encountering terms that financial articles assume you already know. You want clear, honest explanations without condescension or sales pitch language.
</context>

<task>
**Explain these ten investment terms in plain English:**
1. Compound interest
2. Dividend yield
3. Index fund vs actively managed fund
4. Expense ratio
5. Asset allocation
6. Pound-cost averaging
7. Bull market / bear market
8. Liquidity
9. Capital gains tax
10. Diversification

For each term: one sentence definition, one concrete example using everyday amounts (e.g. £100, £1,000), and one common misconception.
</task>

<output_format>
- Term-by-term entries, consistently formatted
- Glossary summary table at the end (term, one-word essence)
- UK context throughout (ISA, HMRC, pounds)
</output_format>