The monkey-eating eagle, also known as the Philippine eagle, is known for eating monkeys, as its name suggests.

The Monkey-eating Eagle, also known as the Philippine Eagle, is the national bird of the Philippines and is listed as an endangered species.

A coolie was a type of worker in the past.

Alkali metals are very reactive chemically.

Her ring was adorned with a beautiful topaz.

The calculation of the arccotangent is a part of trigonometry.

A quark is a type of elementary particle, and it is a component of protons and neutrons.

Primates, known as '霊長目' in Japanese, is a classification that includes many mammals, including humans.

During World War II, Japan was part of the Axis powers.

The Austronesian language family is one of the most widely distributed language families in the world.