turn over vs furrow

turn over is not a noun while furrow is a noun.

Word	Noun	Adjective	Verb	Adverb
turn over	No	No	Yes	No
furrow	Yes	No	Yes	No

As verbs, furrow is a hyponym of turn over; that is, furrow is a word with a more specific, narrower meaning than turn over:

Other hyponyms of turn over include groove, rut, root, rootle, rout, spade, shovel, trowel, burrow, tunnel.

turn over (noun)	furrow (noun)
	a long shallow trench in the ground (especially one made by a plow)
	a slight depression or fold in the smoothness of a surface

turn over (verb)	furrow (verb)
think about carefully; weigh	hollow out in the form of a furrow or groove
turn up, loosen, or remove earth	make wrinkled or creased
turn upside down, or throw so as to reverse	cut a furrow into a columns
turn from an upright or normal position
cause to overturn from an upright or normal position
move by turning over or rotating
cause to move around a center so as to show another side of
place into the hands or custody of
do business worth a certain amount of money