>>Hi everybody,
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>>The word "advice" is a noun, while "advise" is a verb. However, I see lots of messages, even from the native speakers, where "advise" is used as a noun. I'm wondering, what other examples for "c" in a noun and "s" in a verb exist?
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>>Thanks in advance.
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>Reminds me that there is an english word that has two opposite meanings - but the same word. Can you think of it?

I can think of a few that sort of fit, but the one that seems most likely to me is 'cleave', or possibly 'enjoin'.