śhrī-bhagavān uvācha
idaṁ śharīraṁ kaunteya kṣhetram ity abhidhīyate
etad yo vetti taṁ prāhuḥ kṣhetra-jña iti tad-vidaḥ|| 2||

My Understanding : Let’s first explore the meanings of Kshetra and Kshetrajna. These words can be seen as opposites. The general meaning of Kshetra is a place on Earth, often referring to ordinary land. However, if a place holds historical or spiritual significance, it becomes a Kshetra. For instance, Lord Sri Krishna is revered as Kshetragundu (the knower or protector of the Kshetra).