Xylophagy vs. Xylophagous — What's the Difference?

Xylophagy is a term used in ecology to describe the habits of an herbivorous animal whose diet consists primarily (often solely) of wood. The word derives from Greek ξυλοφάγος (xulophagos) "eating wood", from ξύλον (xulon) "wood" and φαγεῖν (phagein) "to eat", an ancient Greek name for a kind of a worm-eating bird.

Feeding on or obtaining nutrition from wood

The eating of wood.

Feeding on wood. of insects etc.

Destructive to wood. of fungi etc.

Eating, boring in, or destroying, wood; - said especially of certain insect larvæ, crustaceans, and mollusks.