Stamp Collecting Terms

noun a unit of value in a system of currency

• The bank only accepts bills of a certain denomination for exchange.
• I only have coins of small denominations in my wallet.
• I don't have any cash on me, just a bunch of random denominations.
• In this denomination of society, wealth and status are closely linked.

noun the act of piercing or puncturing

• The perforation in the paper was precise and clean.
• I accidentally made a perforation in my notebook while trying to tear out a page.
• I hate when my pencil perforates the paper and leaves a mark.
• The emotional perforation caused by his words was deep and lasting.