We decided to start a new project by joining our companies.

A mass noun refers to a noun that cannot be counted.

She had a beautiful headdress on her head.

She called me 'Tom'.

She is good at playing the transverse flute.

He was walking while whistling.

He crossed the lake in a small boat.

He is studying ancient martial arts.

In the Edo period, the magistrate played an important role in maintaining the order of the town.

Great Britain is known for its beautiful nature and historical buildings.