Doctors speak of three kinds of pain: acute,chronic and breakthrough.

VOA: special.2009.02.10

The American system has three kinds of juries.

VOA: special.2009.08.31

There are three kinds of lupus.

VOA: special.2010.06.15

And,in one language in Botswana, there are three main kinds of plants and animals: edible "eat-things", harmful "bite-things" and "useless things."

VOA: special.2009.12.02

There are four kinds of echidnas: three species are long-nosed, while another has a short nose.

VOA: special.2009.07.07

There are three basic kinds of strawberries: June bearing,ever bearing and day neutrals.

VOA: special.2009.05.19

More than three-hundred-fifty kinds of birds visit the island each summer.

VOA: special.2011.07.25

Scientists know of about three thousand kinds of snakes.

VOA: special.2010.01.25