This is the 137th most frequent Afrikaans word.
september
September: The ninth month of the year.
In this sentence, 'September' is used as a proper noun, a month of the year.
September is 'n maand in die herfs.
September is a month in the fall.
Here, 'September' is an adverbial noun indicating the time of the action.
Hy vier altyd sy verjaardag in September.
He always celebrates his birthday in September.
In this example, 'September' is a possessive noun, denoting ownership of the cool weather.