wood block vs engraving

wood block and engraving both are nouns.

Word	Noun	Adjective	Verb	Adverb
wood block	Yes	No	No	No
engraving	Yes	No	No	No

As nouns, engraving is a hypernym of wood block; that is, engraving is a word with a broader meaning than wood block:

wood block: engraving consisting of a block of wood with a design cut into it; used to make prints
engraving: a block or plate or other hard surface that has been engraved

wood block (noun)	engraving (noun)
engraving consisting of a block of wood with a design cut into it; used to make prints	making engraved or etched plates and printing designs from them
	a block or plate or other hard surface that has been engraved
	a print made from an engraving