YOU SAID:

the pen is mightyer than the sowrd

INTO JAPANESE

ペンはひもよりも強力です

BACK INTO ENGLISH

The pen is more powerful than the string

INTO JAPANESE

ペンは紐より強力です

BACK INTO ENGLISH

The pen is stronger than the string

INTO JAPANESE

ペンは紐より強いです

BACK INTO ENGLISH

The pen is stronger than the string