unploughed vs unbroken

unploughed and unbroken both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unploughed	No	Yes	No	No
unbroken	No	Yes	No	No

As adjectives, unploughed and unbroken are synonyms defined as:

Other synonyms of unploughed include unplowed.

unploughed (adjective)	unbroken (adjective)
(of farmland) not plowed	not broken; whole and intact; in one piece
	marked by continuous or uninterrupted extension in space or time or sequence
	(especially of promises or contracts) not violated or disregarded
	(of farmland) not plowed
	not subdued or trained for service or use