GOOD QUESTION: I looked it up! LOL
“Ukrainians are calling Russian invaders ‘orcs.’
The word is familiar to JRR Tolkien readers as the name given to the monstrous anthropoids in his epic novel ‘The Lord of the Rings’. In all Tolkien’s stories of the wars in Middle Earth, orcs are violent, destructive In all Tolkien’s stories of the wars in Middle Earth, orcs are violent, destructive and untrustworthy, wreaking wanton havoc wherever they go. It is not hard to see why the people of Ukraine use this name for the invaders of their land.
But although Tolkien made the word his own, its origins are, as he acknowledged himself, much older. Orcs first appeared in a tenth-century glossary written in Old English (Anglo-Saxon) and, more famously, in line 112 of the Old English poem Beowulf: ‘Eotenas ond ylfe ond orcneas’.
In both cases, the word appears as an item in a list of the names of creatures. In Beowulf, it can be translated as ‘ogres and elves and monsters’.
https://www.spectator.co.uk/article/why-are-ukrainians-calling-russian-invaders-orcs-
Absolutely. With the Russian invaders behaving like the “orcs” depicted in Tolkien’s work, that term is a very apt label.