disk vs harrow

disk and harrow both are nouns.

Word	Noun	Adjective	Verb	Adverb
disk	Yes	No	Yes	No
harrow	Yes	No	Yes	No

As verbs, disk and harrow are synonyms defined as:

disk (noun)	harrow (noun)
a flat circular plate	a cultivator that pulverizes or smooths the soil
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

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