经查证，Investopedia对Rights of First Refusal的英文解释为：Right of first refusal (ROFR), also known as first right of refusal, is a contractual right to enter into a business transaction with a person or company before anyone else can. If the party with this right declines to enter into a transaction, the obligor is free to entertain other offers. This is a popular clause among lessees of real estate because it gives them preference to the properties in which they occupy. However, it may limit what the owner could receive from interested parties competing for the property.

Rights of First Refusal是一种合同约定的权利，使得某个人或公司在其他人之前有权与另一方进行商业交易。如果拥有这种权利的一方拒绝进行交易，那么另一方可以考虑其他报价。在房地产租赁中，这是一项常见的条款，因为它给予承租人对其所占用的房产的优先选择权。然而，这可能限制了房产所有者从竞争购买房产的感兴趣方那里获得的利益。

Investopedia对Preemptive Rights的英文解释为：Preemptive rights give a shareholder the opportunity to buy additional shares in any future issue of a company's common stock before the shares are made available to the general public. This right is a contractual clause that is generally available in the U.S. only to early investors in a newly public company or to majority owners who want to protect their stake in the company when and if additional shares are issued.

Preemptive Rights是指股东在公司将普通股公开发行给大众之前，有权购买该公司未来发行的额外股份。这种权利是一种合同条款，通常只在美国提供给早期投资者或希望保护其在公司中股权份额的大股东，以防公司发行额外股份时使用。

这两个术语的英文含义非常接近，都涉及在某些交易或情况下优先购买的权利。它们的主要区别在于，Rights of First Refusal通常用于普遍的购买或租赁情况，而Preemptive Rights更多地用于股权或投资领域。

Rights of First Refusal可以适用于各种不同类型的交易，如房地产、合同和商业交易等。Preemptive Rights则主要适用于公司股权或投资机会的情况，旨在保护现有股东或投资者的权益。

总结：Rights of First Refusal和Preemptive Rights都是指在特定情况下享有优先购买权的权利。但其应用范围和作用略有不同。Rights of First Refusal适用于各种交易，确保拥有该权利的人在交易发生前有机会参与。而Preemptive Rights主要适用于股权或投资领域，确保现有股东在公司发行新股或证券时能优先购买以保持相对持股比例。