coin collection vs numismatology

coin collection and numismatology both are nouns.

Word	Noun	Adjective	Verb	Adverb
coin collection	Yes	No	No	No
numismatology	Yes	No	No	No

As nouns, coin collection and numismatology are synonyms defined as:

coin collection and numismatology: the collection and study of money (and coins in particular)

Other synonyms of coin collection include coin collecting, numismatics.

coin collection (noun)	numismatology (noun)
the collection and study of money (and coins in particular)	the collection and study of money (and coins in particular)
a collection of coins