What's the difference between counterpassant and repassant?

Counterpassant

Definition:

• (a.) Passant in opposite directions; -- said of two animals.

Example Sentences:

Repassant

Definition:

• (a.) Counterpassant.

Example Sentences:

• (1) The arteriotomy may be opened for repassing embolectomy catheters by relieving the traction; if circulation is satisfactory the sutures are tied.