Ebony and Hardwood

Ebony noun - Hard dark-colored heartwood of the ebony tree; used in cabinetwork and for piano keys.

Hardwood and ebony are semantically related in black tropical wood topic. In some cases you can use "Hardwood" instead a noun "Ebony".

Hardwood noun - The wood of broad-leaved dicotyledonous trees (as distinguished from the wood of conifers).

Ebony and hardwood are semantically related in black tropical wood topic. Sometimes you can use "Ebony" instead a noun "Hardwood".