Wash vs Washington, D.C.

Wash

name

  • A diminutive of the male given name Washington. 

Washington, D.C.

name

  • The capital city of the United States, formally known as the District of Columbia. Abbreviated as D.C. or DC. 

How often have the words Wash and Washington, D.C. occurred in a corpus of books? (source: Google Ngram Viewer )