concoction vs filling

concoction and filling both are nouns.

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

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

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

concoction (noun)	filling (noun)
the act of creating something (a medicine or drink or soup etc.) by compounding or mixing a variety of components	the act of filling something
the invention of a scheme or story to suit some purpose	the yarn woven across the warp yarn in weaving
an occurrence of an unusual mixture	(dentistry) a dental appliance consisting of any of various substances (as metal or plastic) inserted into a prepared cavity in a tooth
any foodstuff made by combining different ingredients	a food mixture used to fill pastry or sandwiches etc.
	flow into something (as a container)
	any material that fills a space or container