Final answer:
The primary difference is that in extortion, property is taken with the victim's consent, which is induced by threats or coercion, whereas robbery involves taking property by force without consent.
Step-by-step explanation:
One difference between robbery and extortion is that in extortion the property is taken with the victim's consent, although this consent is usually induced by threats or coercion. In contrast, robbery involves taking property by force or threat of force without the consent of the victim. Extortion often carries the connotation of blackmail, where the perpetrator seeks to obtain money, property, or services from the victim by threatening to reveal embarrassing, incriminating, or socially damaging information, or by threatening harm of some kind. While the property exchange in extortion is technically 'consensual,' the law recognizes that the consent is not given freely and willingly, but rather out of fear or the desire to avoid greater harm.