If companies want to get into the metaverse business, they first must master the "metaverse lingo".
There are many key terms and concepts that entrepreneurs (and not only them...) should understand, early and effectively, to do business in the metaverse and separate hype from business reality. 

However, having to make a choice to concentrate the most salient terms in the short space of this contribution of mine, I believe that the following five terms are the most important:

1. Cryptoasset
2. Token
3. Smart contract
4. NFT (Non-fungible tokens)
5. DAO (Decentralized autonomous organization)

Let's move on in an orderly way. 

Cryptoasset

Cryptoasset is a digital representation of value made unique thanks to the use of cryptographic mechanisms. Cryptoassets can be traded on Distributed Ledger platforms respecting the rules of a blockchain protocol (native assets).
They represent the basic crypto-economic unit in any metaverse.

Token

By using one of the most general accepted definitions of mine, "a token is a 'digital binding' of the legitimation of a right to the asset represented by the cryptoasset itself that allows you to create a link between a physical or digital asset (or that is outside the blockchain) and a native asset of the blockchains".

Exchangeable on DLT platforms, in a token transaction, the validity of the underlying legal transactions could be "technically guaranteed" by a blockchain protocol using appropriate Smart Contracts.

In computer science terms a Token is a Smart Contract.

Smart Contract

Smart Contract is a program that makes the execution of a contract "automatic".
The compulsory respect for the rules encoded is inherent in the smart contract itself, not in the subjection to the law. Trust is placed in the programme code.

Smart Contracts are the very excellent solutions to properly manage the commercial relationship in the metaverse since they can run on a trustless environment like metaverse is, where there is no room for any Central Authority.
The lack of Central Authority is because of (or thanks to) the public blockchain on top of which a virtual world built inside a metaverse is (or should be ...), if we want an effectively open metaverse.

NFT

NFT is a token used to represent a tangible or intangible asset and related rights, the uniqueness and authenticity of which are ensured using encryption and DLT-based technology.
The analogical good is represented in its original value, allowing the creation of a "Digital Subrogate" immune to the risk of replication.

DAOs

DAOs are decentralized organizations that are run by a set of rules encoded in smart contracts, rather than by a central authority. They are often used to facilitate decentralized decision-making and governance in the metaverse.

Understanding these key terms and concepts is important for entrepreneurs looking to enter the metaverse business, as they will have a chance to survive resiliently.