Radio astronomy plays a very important role in understanding the universe.

He has astronomical knowledge.

His name is Yamada Taro.

He is world-famous as an astronomer.

Plants of this kind are collectively referred to as 'cacti'.

He can speak Scots.

Gaelic is the traditional language of Ireland.

His greed shows his attitude of doing anything to achieve his goals.

He is famous for his greed.

I found a woodlouse in the garden.