This is the 23rd most frequent Greek word.
δύο
The Greek word "δύο" means "two" in English.
The word "δύο" is used here as a numeral to denote the count of apples.
Έχω δύο μήλα.
I have two apples.
The word "δύο" serves as a numeral describing the duration of the struggle in weeks.
Δυσκολεύτηκα για δύο εβδομάδες.
I struggled for two weeks.
The word "δύο" indicates the duration in hours before arriving.