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Buteo is a genus of medium to fairly large, wide-ranging raptors with a robust body and broad wings. Buteo is the Latin name of the common buzzard.

1/ Common buzzard (Diều thường, Buteo buteo)
2/ Eastern buzzard or Japanese buzzard (Diều Nhật Bản, Buteo japonicus)

Buteo (Latin): Refers to a buzzard, a type of bird of prey. 

Common buzzard (Diều thường, Buteo buteo)

The common buzzard (Buteo buteo) is a medium-to-large bird of prey in the family Accipitridae.

The species lives in most of Europe and extends its breeding range across much of the Palearctic as far as northwestern China, far western Siberia and northwestern Mongolia.
The bird is a year-round resident, except for those living in the colder parts of the Northern Hemisphere. 

Buteo (Latin): Refers to a buzzard, a type of bird of prey. 

Eastern buzzard or Japanese buzzard (Diều Nhật Bản, Buteo japonicus)

The eastern buzzard or Japanese buzzard (Buteo japonicus) is a medium to large bird of prey that is sometimes considered a subspecies of the widespread common buzzard (Buteo buteo).

The bird is native to East Asia and some parts of Russia and South Asia, with some birds wintering in Southeast Asia.

The Latin/Greek meaning of Accipitridae is the family of "hawks," derived from the Latin word "accipiter" (hawk) and the taxonomic suffix "-idae" (family). While "accipiter" is the primary source, some scholars suggest a potential connection to the Ancient Greek words okypteros ("swift-winged") and okys ("swift") and -pteros winged. 
Buteo (Latin): Refers to a buzzard, a type of bird of prey.