different between leathery vs coriaceous

English

leather +? -y

leathery (comparative more leathery or leatherier, superlative most leathery or leatheriest)

Having the consistency, feel, or texture of leather.
The beef jerky was tough and leathery.

Latin corium (“skin, leather”) +? -aceous

coriaceous (comparative more coriaceous, superlative most coriaceous)

(botany) Resembling leather; leathery.
- 1997, JinShuang Ma, "New Species of Euonymus (Celastraceae) from East and South Asia", Harvard Papers in Botany 10: 93-111, Abstract.
  This species is similar to E. vagans Wallich in the texture of the leaves, which are more thickly coriaceous and have fewer crenulations on margin; the large globose capsules are white spotted.