What's the difference between edacious and orectic?

Edacious

Definition:

• (a.) Given to eating; voracious; devouring.

Example Sentences:

Orectic

Definition:

• (a.) Of or pertaining to the desires; hence, impelling to gratification; appetitive.

Example Sentences:

• (1) The results suggest that, in contrast to rabbits, Stumptail monkeys are more useful in searching for an 'orectic' effect of clonidine analogs.