BUIDL refers to build and means that the focus should be on building the project, instead of making a quick gain. BUIDL is wrongly written, just as HODL (the slang that existed before BUIDL).
A whale is someone who owns a lot of cryptocurrency. If a Whale decides to sell a lot their stake, it can cause the price of a cryptocurrency to dip.
Ticker refers to the acronym of a token or cryptocurrency, it is its trading symbol. For example, ETH for Ethereum and BTC for Bitcoin.
A stablecoin is a token whose value is fixed to a real-word asset. An example of a stablecoin is the USD stable coin, whose value will always be 1$ regardless market conditions.
A soft fork if an update in the software of the client running a blockchain that makes some of the previous blocks/transactions invalid. It is compatible with previous versions, so it does not create a new coin on a different blockchain like in a hardfork.
Segregated Witness, is the name of a controversial soft fork that took place on the Bitcoin blockchain to extend the capabilities of the blockchain while at the same time improving the scalability and fixing some issues. Some people that did not agree with the fork created Bitcoin Cash.
Satoshi Nakamoto is the person(s) who created bitcoin, however nobody knows who he/she really is, and whether Satoshi Nakamoto represents an individual or a group.
“Pump and dump” is a scheme in which a group of investors promote a coin to boost its price and to then dump it for a profit. Mainly these schemes are organized through social platforms such as Telegram.
A private key (or secret key) is the crypto equivalent to a pincode that is needed to access your bankaccount. It is a bit of code that is paired with a public key to encrypt and decrypt code. Crypto wallets have private keys, every user needs its private key to access his/her wallet that holds
OTC stands for Over-the-counter. It refers to a security traded in not made on a formal exchange. When it comes to crypto, OTC trading is a service available to high-volume traders and it takes place away from the exchanges. Normally OTC trades are handled by brokers specialized in large transactions.