coin blank vs disk

coin blank and disk both are nouns.

Word	Noun	Adjective	Verb	Adverb
coin blank	Yes	No	No	No
disk	Yes	No	Yes	No

As nouns, disk is a hypernym of coin blank; that is, disk is a word with a broader meaning than coin blank:

Other hypernyms of coin blank include disc.

coin blank (noun)	disk (noun)
a flat metal disk ready for stamping as a coin	a flat circular plate
	sound recording consisting of a disk with a continuous groove; used to reproduce music by rotating while a phonograph needle tracks in the groove
	(computer science) a memory device consisting of a flat disk covered with a magnetic coating on which information is stored
	something with a round shape resembling a flat circular plate

coin blank (verb)	disk (verb)
	draw a harrow over (land)