This is the 1580th most frequent Arabic word.
والعشرين
"والعشرين" means "and twenty."
Here, والريعين indicates 'twentieth' used ordinality to specify age in a celebratory context.
أحتفل بعيد ميلادي والعشرين في الأسبوع المقبل.
I will celebrate my twentieth birthday next week.
Here, والريعين signifies 'twentieth' to denote the location (floor number) within the building.
يعيش جدي في الطابق والعشرين من المبنى.
My grandfather lives on the twentieth floor of the building.
Here, والريعين refers to 'twentieth' to describe a sequential page number in the book.