quern vs milling machinery

quern and milling machinery both are nouns.

Word	Noun	Adjective	Verb	Adverb
quern	Yes	No	No	No
milling machinery	Yes	No	No	No

As nouns, milling machinery is a hypernym of quern; that is, milling machinery is a word with a broader meaning than quern:

quern: a primitive stone mill for grinding corn by hand
milling machinery: machinery that processes materials by grinding or crushing

Other hypernyms of quern include grinder, mill.

quern (noun)	milling machinery (noun)
a primitive stone mill for grinding corn by hand	machinery that processes materials by grinding or crushing