This is the 119th most frequent Vietnamese word.
mùa
"Season."
Here, 'mùa' is used to denote one of the four seasons in a year.
Mùa xuân là mùa đẹp nhất trong năm.
Spring is the most beautiful season of the year.
'Mùa' refers to different weather periods typical of a year.
Ở Việt Nam, có mùa mưa và mùa khô.
In Vietnam, there are rainy and dry seasons.
In this context, 'mùa' is used metaphorically to describe a recurring event or period of a specific activity.