'Corpus' is Latin for 'body' — the root of corporate, corpse, corporal, and habeas corpus.
A Latin word meaning 'body,' both the physical human body and any organized whole, and the source of English words relating to bodies, embodiment, and physical substance.
From Proto-Italic *korpos, from the Proto-Indo-European root *kʷrep- meaning 'body, form, appearance.' Latin corpus (stem corpor-) was a third-declension neuter noun used for the human body, a corpse, the body politic, a corpus of writings, and any physical substance or mass. The PIE root also produced Old English hrīf ('belly, womb'), Middle High
'Corpse,' 'corps,' and 'corpus' are triplets — three English borrowings of the same Latin word at different times. 'Corpse' arrived through Old French cors in the thirteenth century and eventually came to mean specifically a dead body. 'Corps' was re-borrowed from French in the eighteenth century to mean