Usage of discover, learn, find out, realize

[Majid72]

Hello

Would you please tell me if there is any subtle difference among "discover,learn,,find out,realize"?Are they interchangeable?

[Skrej]

Learn, discover, and find out are somewhat interchangeable, with some subtle differences.

'Learn' has a more of a sense of making a conscious effort to find out by researching or studying.

'Discover' and 'find out' have more of a sense of gaining knowledge by exploring or investigating. There's more of a surprise or unexpected element with them.

'Realize' isn't really interchangeable with the other three words. It has more of a sense to somewhat suddenly become fully aware of something, perhaps after the fact.
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