tilth vs tilled land

tilth and tilled land both are nouns.

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

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

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

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

tilth (noun)	tilled land (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