This is the 5215th most frequent Russian word.
ноябрь
"Ноябрь" means "November" in English, the eleventh month of the year.
In this sentence, 'Ноябрь' is used as the subject of the statement, indicating the name of the month, specifically November.
Ноябрь — один из самых холодных месяцев в году.
November is one of the coldest months of the year.
Here, 'ноябре' is the prepositional case of 'Ноябрь', used to indicate the time of the action occurring, i.e., the month of November.
Я родился в ноябре, и этот месяц мне очень дорог.
I was born in November, and this month is very dear to me.
In this case, 'ноябре' is used with 'в' to specify a certain November, emphasizing it as the time frame for the discussed event.