Last Friday, when the phone rang, the caller I.D. read Barclay Bank. Uh-oh. That’s not good. Barclay Bank is synonymous with only one thing for me – my MasterCard. The only time any credit card ...

The 's' shows that the tail belongs to the cat. If a singular noun already ends in 's', you don't need to add another 's'. You can just add an apostrophe at the end. Plural nouns refer to more ...