This is the 425th most frequent Spanish word.
período
"Período" means "period," referring to a span of time, a phase, or a punctuation mark.
In this sentence, 'período' refers to a span of time designated for classes or academic activities.
El período de clases comenzará en septiembre.
The school period will start in September.
Here, 'período' is used to describe a specific historical timeframe, the Baroque period.
Ella estudió el período barroco en su clase de arte.
She studied the Baroque period in her art class.
This usage of 'período' indicates a billing or accounting interval, typically related to financial matters.