is a specific kind of: flycatcher, New World flycatcher, tyrant bird, tyrant flycatcher.

is a broader term that covers: Arkansas kingbird, western kingbird | Cassin's kingbird, Tyrannus vociferans | eastern kingbird | gray kingbird, grey kingbird, petchary, Tyrannus domenicensis domenicensis.

is a member of: genus Tyrannus, Tyrannus.