interest in Catalan

(uncountable, finance) The price paid for obtaining, or price received for providing, money or goods in a credit transaction, calculated as a fraction of the amount or value of what was borrowed. [from earlier 16th c.]

(countable) Something which, or someone whom, one is interested in.

(obsolete, often, _, impersonal) To be concerned with or engaged in; to affect; to concern; to excite.