Noun
the collection and study of postage stamps
Source: WordNetAll science is either physics or stamp collecting. Ernest Rutherford
Preserving tradition has become a nice hobby, like stamp collecting. Mason Cooley
In science there is only physics; all the rest is stamp collecting. William Thomson
Stamp collecting can be both a hobby and a form of historical study and reference, as government-issued postage stamps and their mailing systems have always been involved with the history of nations. Source: Internet
Stamp collecting has declined along with the decline in the importance of the postal system. Source: Internet
Stamp collecting is a less popular hobby in the early 21st century than it was a hundred years ago. Source: Internet