In the United States, puma has been used as slang for a cougar minus ten years; she is defined as a woman in her 30s who prefers dating younger men.

What do you call a relationship where the woman is older?

An older woman seeking younger men may be called a cougar. Cougar (slang) - Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Cougar_(slang) Wikipedia Cougar is a slang term that refers to a woman who seeks sexual relations with considerably younger men.