intermixture vs filling

intermixture and filling both are nouns.

Word	Noun	Adjective	Verb	Adverb
intermixture	Yes	No	No	No
filling	Yes	No	No	No

As nouns, filling is a hyponym of intermixture; that is, filling is a word with a more specific, narrower meaning than intermixture:

Other hyponyms of intermixture include mincemeat, dressing, stuffing, roux, batter, dough, mix, premix.

intermixture (noun)	filling (noun)
the act of mixing together	the act of filling something
an additional ingredient that is added by mixing with the base	the yarn woven across the warp yarn in weaving
any foodstuff made by combining different ingredients	(dentistry) a dental appliance consisting of any of various substances (as metal or plastic) inserted into a prepared cavity in a tooth
	a food mixture used to fill pastry or sandwiches etc.
	flow into something (as a container)
	any material that fills a space or container