flour mill vs mill

flour mill and mill both are nouns.

Word	Noun	Adjective	Verb	Adverb
flour mill	Yes	No	No	No
mill	Yes	No	Yes	No

As nouns, mill is a hypernym of flour mill; that is, mill is a word with a broader meaning than flour mill:

Other hypernyms of flour mill include grinder, milling machinery.

flour mill (noun)	mill (noun)
a mill for grinding grain into flour	the act of grinding to a powder or dust
	machinery that processes materials by grinding or crushing
	a plant consisting of one or more buildings with facilities for manufacturing

flour mill (verb)	mill (verb)
	grind with a mill
	produce a ridge around the edge of
	roll out (metal) with a rolling machine
	move about in a confused manner