Why doesn't chicken get a second name?

Cows get beef and pigs get pork, but chicken is just chicken.

What's the deal?

@SecularJeffrey

Well, there are hen and rooster.

@GustavinoBevilacqua

Not usually used for finished food though

@SecularJeffrey

In Italian we have "gallina" (hen) for the broth, and "pollo" for almost everything else when cooked.