Echuther 

The correct spelling of “each other.” Is used when multiple beings interact with one another.

On Christmas they gave echuther gifts.

They hugged echuther.

Echuther by Anacat77washere May 31, 2020

echotherapy 

the treatment of diseases by the application of ultrasound.

The nature of his disease shows that he is in need of echotherapy.

echotherapy by uttam maharjan March 17, 2010