I will add 50 of the many cryptocurrency terminologies1. Exchange - Websites where you can buy and sell crypto-currencies.
2. Fiat - Government-issued currency, such as the US dollar.
3. Bullish - An expectation that price is going to increase.
4. Tokens - Refers to the ‘currency’ of projects built on the ethereum network that have raised money via issuing their own tokens.
5. ICO - Initial Coin Offering, somewhat similar to an IPO in the non-crypto world. Startups issue their own token in exchange for ether.
6. Stable coin - A crypto-currency with extremely low volatility that can be used to trade against the overall market.
7. Scam - brief explanation of "Not Paying"
8. Trading - act of buying and selling activity on bitcoin exchanger sites
9. Wallet - used to store your coins/tokens. It's either online, offline or hardware wallet
10. Address - consists of alphanumeric characters. The only way to receive coins/tokens from other wallets.
11. PoW - Proof-of-work. The current consensus algorithm used by Ethereum.
12. Sharding - a scaling solution for blockchains.
13. Software wallet - storage for crypto-currency that exists purely as software files on a computer.
14. Hardware wallet - a device that can securely store crypto-currency.
15. Ledger Nano S / Trezor - two of the most popular hardware wallet models.
16. Smart contract - code that is deployed onto the Ethereum blockchain, often directly interacting with how money flows.
17. Dump - this is where the price of a token/coin go down.
18. Pump - opposition of dump. Where price of a token/coin go up.
19. Escrow - a third party selected and trusted by two individuals to mediate to their transactions.
20. Dapp - decentralized Application, this refers to an application that uses an Ethereum smart contract as it’s back-end code.
30. Airdrop - it is a free crypto coin that is being dished out by a certain project to the wallets of the crypto community.
31. Forking - it is a network split that will create another crypto currency.
32. FUD - Fear, Uncertainty and Doubt. It's the way to scare people so they will be hesitant on buying cryptocurrencies.
33. Fork - when a copy of the blockchain is made and changes are also made to the code to create a new coin.
33. Gas - a measurement of how much processing is required by the ethereum network to process a transaction.
34. Whale - someone that owns absurd amounts of crypto-currency.
35. Bearish - an expectation that price is going to decrease.
36. Altcoin - coins aside from bitcoin.
37. Block - a block is group of bitcoin transactions that are being processed & confirmed.
38. Blockchain - a publicly shared record of every bitcoin transaction that has ever been processed.
39. Hash Rate - is a measurement of computer processing power of bitcoin miners.
40. Hard cap - The maximum projected amount during ICO token sale.
41. Soft cap - the minimum projected amount during ICO token sale.
42. Momentum - price movement.
43. ERC20 - a standard for creating ETH based tokens.
44. Crypto - short for cryptography or cryptocurrency.
45. Chop - directionless price movement that lacks momentum
46. Reversal - a change in price direction.
47. Miners - people who run computers to secure transactions on a blockchain.
48. Accumulation - buying an asset to acquire a sizable position.
49. Bounce play - when the price bounces up quickly after a dump.
50. Breakdown - price dropping below support.
Source: https://cryptominded.com/glossary-cryptocurrency-terms-need-know/