Exchanges: Online markets that allow you to make cryptocurrency tradings.
Trading: Purchase and / or sale of cryptocurrencies.
Altcoins: Are those coins that are not Bitcoin or Etherium.
Fork: Update that receives a cryptocurrency.
Mooning: When a cryptocurrency suffers a big rise in its value.
Holding: It is when one buys a cryptocurrency with the idea of storing it and not trading it in the short term.
Pump & Dump: Fraudulent strategies that mean "Inflate and Throw", is related to the increase or decrease of a cryptocurrency.
Whales: They are people who have great capital and make use of it buying or selling.
Scam: Fraudulent pages or programs that assure you a gain in exchange for an investment.
Fiat: Money managed by the government.
I hope it helps to new traders to improve your trader skills :)