This is the 807th most frequent Spanish word.
ciclo
A series of events or processes that repeat in a regular sequence.
Here, 'ciclo' refers to a recurring series of events in a natural process.
El ciclo del agua es fundamental para la vida en nuestro planeta.
The water cycle is fundamental for life on our planet.
In this usage, 'ciclo' represents a periodical fluctuation in an economic context.
Estoy tomando un curso sobre ciclos económicos.
I am taking a course on economic cycles.
This instance of 'ciclo' is used to describe an academic term or period.