Conclusively vs Debunk - What's the difference?

As an adverb conclusively

is in a conclusive manner; with finality.

to discredit, or expose to ridicule the falsehood or the exaggerated claims of something.

(en adverb)

In a conclusive manner; with finality.

Once the final experiment had been performed, the theory was conclusively proved.

(en verb)

To discredit, or expose to ridicule the falsehood or the exaggerated claims of something

Sailing round the world debunked the theory that the earth was flat.

Debunking the myth of the American West.

That bullshit has already been debunked .

A myth that has long been debunked .

The explosion story was thoroughly debunked on National Public Radio in November 1999.