gravure vs photogravure

gravure and photogravure both are nouns.

Word	Noun	Adjective	Verb	Adverb
gravure	Yes	No	No	No
photogravure	Yes	No	No	No

As nouns, photogravure is a hyponym of gravure; that is, photogravure is a word with a more specific, narrower meaning than gravure:

Other hyponyms of gravure include rotogravure.

As nouns, gravure and photogravure are synonyms defined as:

Other synonyms of gravure include heliogravure.

As nouns, photogravure is a hyponym of gravure; that is, photogravure is a word with a more specific, narrower meaning than gravure:

gravure: a printing process that uses an etched or engraved plate; the plate is smeared with ink and wiped clean, then the ink left in the recesses makes the print
photogravure: printing from an intaglio plate prepared by photographic methods

Other hyponyms of gravure include cerography.

gravure (noun)	photogravure (noun)
the act of intaglio printing	using photography to produce a plate for printing
an intaglio print produced by gravure	an intaglio print produced by gravure
a printing plate used in the process of gravure	printing from an intaglio plate prepared by photographic methods
a printing process that uses an etched or engraved plate; the plate is smeared with ink and wiped clean, then the ink left in the recesses makes the print