垦 ⇒
开垦 kāikěn, [開墾], to clear a wild area for cultivation/to put under the plow
垦 kěn, [墾], to reclaim (land)/to cultivate
垦荒 kěnhuāng, [墾荒], to open up land (for agriculture)
耕 ⇒
耕 gēng, [畊], variant of 耕[gēng], to plow/to till
耕种 gēngzhòng, [耕種], to till/to cultivate
耕耘 gēngyún, plowing and weeding/farm work/fig. to work or study diligently
耕作 gēngzuò, farming
耕地 gēngdì, arable land/to plow land
耕田 gēngtián, to cultivate soil/to till fields
笔耕 bǐgēng, [筆耕], to make a living by writing/to write (as an author)
自耕农 刀耕火种 dāogēnghuǒzhòng, [刀耕火種], slash and burn (agriculture)