client vs walk-in

client

noun
  • A customer, a buyer or receiver of goods or services. 

  • The role of a computer application or system that requests and/or consumes the services provided by another having the role of server. 

  • A person who receives help or services from a professional such as a lawyer or accountant. 

  • A person who employs or retains an attorney to represent him or her in any legal matter, or one who merely divulges confidential matters to an attorney while pursuing professional assistance without subsequently retaining the attorney. 

walk-in

noun
  • A customer, job applicant or similar who visits a restaurant, medical facility, car dealership, etc. without a reservation, appointment, or referral. 

  • A demonstration or protest in which the participants assemble outside a facility, gain media exposure, and enter the facility in unison. 

  • A relatively small room (such as a closet or pantry) or refrigerator or freezer that is spacious enough to walk into. 

  • A relatively larger room or (especially) an apartment that is entered directly, not via an intervening passage or lobby. 

  • A person whose original soul has departed the body and been replaced with another. 

  • A facility or an event that principally handles customers who do not have an appointment. 

  • A defector (or similar) who walks into an embassy (etc) unannounced. 

  • A facility accessed on foot rather than by car, usually contrasted to drive-in. 

adj
  • Accessed by walking, either exclusively, as a campground, or together with drive-in access, as at some drive-in movie theaters. 

  • Gaining access through unlocked doors. 

  • Designed to be possible to walk into (without stepping over a ledge, etc). 

  • That people may enter without a prior appointment. 

  • Spacious enough to walk into. 

How often have the words client and walk-in occurred in a corpus of books? (source: Google Ngram Viewer )