farmland vs tillage

farmland and tillage both are nouns.

Word	Noun	Adjective	Verb	Adverb
farmland	Yes	No	No	No
tillage	Yes	No	No	No

As nouns, farmland and tillage are synonyms defined as:

farmland and tillage: arable land that is worked by plowing and sowing and raising crops

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

farmland (noun)	tillage (noun)
a rural area where farming is practiced	the cultivation of soil for raising crops
arable land that is worked by plowing and sowing and raising crops	arable land that is worked by plowing and sowing and raising crops