harrow vs disc harrow

harrow and disc harrow both are nouns.

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

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

Other hyponyms of harrow include disk harrow, tine harrow, rotary harrow.

harrow (noun)	disc harrow (noun)
a cultivator that pulverizes or smooths the soil	a harrow with a series of disks set on edge at an angle

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