interest (nom)
Sens 1 : the state of wanting to learn or know (about somebody/something); curiosity; concern;
(just) to satisfy a desire for knowledge. [source : D'après OAL]
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Sens 2 : a quality that arouses concern or curiosity; power to hold one's attention. [source : D'après OAL]
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Sens 3 : a thing with which one concerns oneself or about which one is enthusiastic. [source : D'après OAL]
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Sens 4 : an advantage; benefit. [source : D'après OAL]