harrow vs rotary harrow

harrow and rotary harrow both are nouns.

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

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

harrow: a cultivator that pulverizes or smooths the soil
rotary harrow: a harrow that uses a series of turning spiked wheels for breaking up and smoothing out the surface of the soil.

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

harrow (noun)	rotary harrow (noun)
a cultivator that pulverizes or smooths the soil	a harrow that uses a series of turning spiked wheels for breaking up and smoothing out the surface of the soil.

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