hari - हरि - name of two horses, which are symbolic of Sun as a charioteer riding on two horses and two versions of light and in hurry. Horses are known for power and speed. The word hurry is connected with horses. The two versions of light are Electric and Magnetic Fields that drive each other. The two horses drive each others like Electric and Magnetic Fields driving each other.
ghRS - घृष् - to rub against, to polish - In old days grass was used by humans and animals to rub their skins when itching. We can still see animals doing it.
