1) Aggregation 2) Assembling 3) Coin collecting 4) Coin collection 5) Collecting 6) Collection 7) Numismatics 1) Numismatics 
• (n.) The science which treats of coins and medals, in their relation to history; numismatics. • (n.) The science which treats of coins and medals, in their relation to history; numismatics.
Nu·mis`ma·tol'o·gy noun [ Latin numisma , -atis + -logy .] The science which treats of coins and medals, in their relation to history; numismatics.