cultivated land vs tilth

cultivated land and tilth both are nouns.

Word	Noun	Adjective	Verb	Adverb
cultivated land	Yes	No	No	No
tilth	Yes	No	No	No

As nouns, cultivated land and tilth are synonyms defined as:

cultivated land and tilth: arable land that is worked by plowing and sowing and raising crops

Other synonyms of cultivated land include farmland, ploughland, plowland, tillage, tilled land.

cultivated land (noun)	tilth (noun)
arable land that is worked by plowing and sowing and raising crops	arable land that is worked by plowing and sowing and raising crops
	the state of aggregation of soil and its condition for supporting plant growth