Dry climates are steppe and desert. Steppe is very dry but still gets enough rain or snow support some plants. Desert is very very dry and only supports very few plants like cacti and euphorbias. People can live in steppe although it is hard. Living in the desert is extremely hard.
Here in Trinidad. It's divided into Dry Season and Wet Season. Dry runs from Jan to June and Wet from July to Dec. However, we do get a mixture of both types of weather throughout the year.
Arid and semi-arid?