In Dragon's Den, a percentage of a business offered to a dragon is called equity.
Equity represents ownership in a company. When an entrepreneur offers a dragon, for example, 20% equity in exchange for investment, the proposed deal gives the investor a 20% ownership stake, subject to the final agreement and due diligence. The amount of money requested and the percentage offered together imply a valuation for the business.
Interest is different: it is normally the cost of borrowing money and does not automatically give the lender ownership. Turnover means the revenue generated by a business, while a royalty is a payment linked to sales or another agreed measure. These terms can appear in business negotiations but do not mean the same thing as equity.
The equity figure is often the most visible part of a Dragon's Den pitch. Entrepreneurs must balance the need for funding and expertise against the amount of ownership they are prepared to give away.