This is the 23rd most frequent Portuguese word.
ano
"Year."
Here, 'ano' indicates a time span of one year, expressing a duration.
Faz um ano que comecei a aprender piano.
It's been a year since I started learning piano.
In this sentence, 'ano' is used to specify a particular calendar year.
O ano de 2023 foi marcado por muitos eventos importantes.
The year 2023 was marked by many important events.
'Ano' here refers to the subsequent one-year period.