galvanized steel pipe: Galvanized steel pipe is common in older homes for supply lines and branch drain lines. Galvanized pipe is strong, but only lasts 50 years.

Gothic Revival: The Gothic Revival style (1851-1914) emphasized natural materials and was usually used in large pieces.

Greek key: A swirling geometric pattern common in Greek design.

Greek Mediterranean: The Greek Mediterranean look is a decorating style that evokes the feel of homes in the Greek Islands. Traditionally, the Greeks preferred to spend their time on things other than decorating their homes and filling them with fancy things. So, their homes tend to be simple and uncluttered.

groove-joint pliers: Pliers that can be adjusted to fit the size and shape of pipe fitting that you want to turn.

Ground Fault Circuit Interrupter (GFCI): Ground Fault Circuit Interrupter (GFCI) was developed to help keep people from getting shocked by electricity. The easiest way to think of a GFCI is to remember that a normal circuit breaker protects property, while a GFCI protects people.