What is a common confusion among plumbers and the public regarding fixture terminology?

In plumbing terminology, the distinction between a sink and a lavatory often leads to confusion among both plumbers and the public. The term "sink" is commonly used to refer to a bowl-like fixture utilized for washing hands, dishes, and other items, while "lavatory" specifically denotes a type of sink intended primarily for handwashing, usually found in bathrooms.

This confusion can arise because many people use "sink" to describe various types of fixtures, including those in kitchens and bathrooms, without recognizing that "lavatory" carries a specific connotation relating to its design and intended use. This differentiation is significant in plumbing, as it influences the selection of fixtures and respective plumbing connections. Understanding the nuanced definitions helps ensure clarity in communication between plumbers and clients when planning installations or repairs, ultimately promoting more effective service delivery.