Level 3 — Saving & Growing · 7 min
Investing Vocabulary, Without the Mystery
Stocks, bonds, funds, and the handful of words that unlock every article.
Stocks are ownership slivers of companies; bonds are loans to governments or companies; funds are baskets holding many of either. An INDEX fund is a basket that simply copies a market list at very low cost — the workhorse concept of modern saving-for-later.
Risk and return travel together, always. Higher possible growth means bigger possible drops; anyone offering high return with no risk is describing something that doesn't exist (the SEC's investor.gov keeps a museum of what those pitches actually were).
Two numbers explain most outcomes: TIME (years invested — the compounding lesson again) and COST (expense ratios — a 1% annual fee versus 0.05% consumes a startling slice of a lifetime's growth). This lesson is orientation, not advice: our whole site teaches, and never tells you what to buy.
- Index fund
- A fund copying a market list at minimal cost.
- Expense ratio
- A fund's annual fee as a % of your money.
- Diversification
- Spreading money so one failure can't sink you.
- Volatility
- How violently a price swings on the way to wherever it's going.