Day 3 — Coin vs token, and the categories that matter
Why 'crypto' is not one thing. The categories you should be able to name on sight.
If you treat 'crypto' as a single asset class you will keep making decisions that are wrong by design. Bitcoin and a brand-new meme token launched yesterday are barely the same thing. Today is about the categories you should be able to recognise on sight.
A coin runs on its own blockchain — Bitcoin on the Bitcoin chain, Ether on Ethereum, Solana on Solana. A token is built on top of someone else's blockchain. USDC, UNI, and most of the things people call 'altcoins' are tokens, not coins. Tokens inherit the security and rules of their host chain.
The categories worth recognising: payment coins (designed mainly as money — BTC, LTC), smart-contract platforms (the operating systems for everything else — ETH, SOL, AVAX), stablecoins (pegged to a fiat currency, usually the US dollar — USDT, USDC, DAI), Layer 2s (scaling chains stacked on top of an L1 — Arbitrum, Optimism, Base), privacy coins (designed to obscure transactions — XMR, ZEC), meme coins (community / speculation tokens with no claimed utility — DOGE, SHIB, PEPE), and utility/governance tokens (give you a vote or rights in some protocol — UNI, AAVE).
Each category has a different risk profile. Stablecoins can de-peg. Meme coins are almost pure speculation. Smart-contract platforms compete with each other on speed, fees, and decentralisation. Privacy coins face regulatory pressure in some jurisdictions. A 'good' decision in one category can be irrelevant in another.
Example
If a friend says 'I bought some crypto last week,' the question 'which one?' decides almost everything. If it was Bitcoin, they bought into a 17-year-old network with ~$2T market cap, fixed supply, and global liquidity. If it was a token launched three weeks ago through a Telegram group, they own a contract that the launcher can usually drain (a rug pull) or that has no liquidity to sell into. These two purchases share the word 'crypto' and almost nothing else.
Common mistakes
- Comparing prices across categories. A $1 coin and a $100,000 coin tell you nothing on their own — what matters is market cap, supply schedule, and what the thing actually does.
- Assuming 'newer = better'. New tokens usually have less liquidity, more concentrated ownership, and higher fraud rates.
- Buying a token because of its name without checking which chain it lives on. There are dozens of fake 'USDT' tokens on bridge chains.
- Confusing a coin with the company behind it. There is no 'CEO of Bitcoin' — many newer projects do have effective leaders, and that affects how decentralised they really are.
Check your understanding
Which of the following is a TOKEN, not a coin?
Key terms covered
Sources & further reading
- PrimaryEthereum.org — Tokens
Standards specification distinguishing tokens from native coins.
- SecondaryCoinGecko — categories
Live taxonomy of every coin and token by category.
We prioritise primary sources. Where a topic moves quickly (regulation, security incidents), we re-check sources on the cadence shown by the page's "Next review" date.