(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.

(uncountable, finance) Any excess over and above an exact equivalent

(uncountable) A great attention and concern from someone or something; intellectual curiosity.

(uncountable) Attention that is given to or received from someone or something.

(countable) An involvement, claim, right, share, stake in or link with a financial, business, or other undertaking or endeavor.

(countable) Something or someone one is interested in.

(uncountable) Condition or quality of exciting concern or being of importance.

(usually in the plural) The persons interested in any particular business or measure, taken collectively.

To engage the attention of; to awaken interest in; to excite emotion or passion in, in behalf of a person or thing.