This is the 1792nd most frequent Arabic word.
الثامنة
"The eighth."
In this sentence, 'الثامنة' refers to the eighth hour in the morning as part of telling time.
وصلت الحافلة في الساعة الثامنة صباحاً.
The bus arrived at eight o'clock in the morning.
Here, 'الثامن' describes the numeral eighth, used to indicate a specific floor in a building.
سكنت في الطابق الثامن من هذا المبنى.
I lived on the eighth floor of this building.
In this instance, 'الثامنة' references the eighth year of academic study, showing ordinal use in a yearly context.