Final answer:
High-pressure centers and tornadoes are not referred to as cyclones. Cyclones are storm systems with low pressure centers, strong winds, and heavy rains, such as hurricanes and typhoons, which occur in tropical regions.
Step-by-step explanation:
The elements referred to as cyclones include hurricanes and typhoons, which are regional names for tropical cyclones featuring low pressure centers, strong winds, and heavy rains. The term 'cyclone' generally applies to these low-pressure storm systems in tropical regions. However, high-pressure centers and tornadoes are not referred to as cyclones. Tornadoes, although they involve rotational motion and come from severe thunderstorms, are not classified as cyclones. In contrast, high-pressure centers, which have different weather patterns from cyclones, are associated with sinking air and clear skies.