Where does “nosocomus” come from?

nosocomus (Latin) comes from Greek νοσοκόμος, from Greek -κόμος, from Ancient Greek κομέω, from Proto-Indo-European ḱemh₂- — to toil, to exert oneself.

nosocomus (Latin): sick-nurse, attendant on the sick

Definitions

sick-nurse, attendant on the sick

Ancestry of “nosocomus”, step by step

Step	Language	Word	Meaning
1	Greek	νοσοκόμος	male nurse
2	Greek	-κόμος	νόσος + API → νοσοκόμος; βρέφος + API →...
3	Ancient Greek	κομέω	to take care of, tend, look after
4	Proto-Indo-European	ḱemh₂-	to toil, to exert oneself

Every word from Proto-Indo-European ḱemh₂- →Every word from Ancient Greek κομέω →Every word from Greek -κόμος →