"What we've learned about bullying during the last decade or so is that it takes many forms, " Juvonen says.

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But because it takes so many forms, and because it can be detected in any of four stages, the matrix of severity and survival rates is large.

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It's a civilizational struggle and it takes many shapes and many forms.

NPR: The War on Terror, Five Years Later

Flirting takes many forms, but the core of all flirting is the hope that it raises in the man.

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These take many forms: underwriting and registration fees, credit-rating costs, taxes and the time it takes to bring a bond to the market.

ECONOMIST: Economics focus