livers

A regular plural that serves two quite different nouns. For the organ, the plural counts separate ones: chicken livers in the pan, the livers of several fish. As food, though, the organ is usually spoken of as a mass, so you order liver and onions, not livers. The rarer liver, meaning someone who lives in a particular way, takes the same plural, so livers can occasionally mean people. Only context tells the two apart.