line block vs engraving

line block and engraving both are nouns.

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

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

line block: engraving consisting of a block that has been etched or engraved
engraving: a block or plate or other hard surface that has been engraved

line block (noun)	engraving (noun)
engraving consisting of a block that has been etched or engraved	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