numismatics vs collecting

numismatics and collecting both are nouns.

Word	Noun	Adjective	Verb	Adverb
numismatics	Yes	No	No	No
collecting	Yes	No	No	No

As nouns, collecting is a hypernym of numismatics; that is, collecting is a word with a broader meaning than numismatics:

Other hypernyms of numismatics include aggregation, assembling, collection.

numismatics (noun)	collecting (noun)
the collection and study of money (and coins in particular)	the act of gathering something together