If you want the dictionary definition, just double click on any word.
heroin
vs
heroine

These two words sound the same, so the real danger is when writing them.

Heroin is a noun, it is a powerful illegal drug, obtained from morphine and is extremely addictive.

For example: "He was arrested for supplying heroin, a class A drug."

Heroine is a female person who is admired for having done something very brave or having achieved something great. The male equivalent is hero.

For example: "Grace Darling is one of England's best known heroines."

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