This is the 76th most frequent Japanese word.
十
The Japanese word "十" means "ten."
Describing a count of items using the numeral 'ten' with the counter for long objects.
私は十本の鉛筆を持っています。
I have ten pencils.
Expressing duration or passage of time using 'ten' as an indication of numerical length of years.
十年前に大学を卒業しました。
I graduated from university ten years ago.
Using 'ten' to indicate a specific date in both the month and day.