double-furrow plough vs two-furrow plough

double-furrow plough and two-furrow plough both are nouns.

Word	Noun	Adjective	Verb	Adverb
double-furrow plough	Yes	No	No	No
two-furrow plough	Yes	No	No	No

As nouns, double-furrow plough and two-furrow plough are synonyms defined as:

double-furrow plough and two-furrow plough: a plough with two moldboards.

Other synonyms of double-furrow plough include double-furrow plow, two-furrow plow.

double-furrow plough (noun)	two-furrow plough (noun)
a plough with two moldboards.	a plough with two moldboards.