boiler

noun 0.769

steam boiler

noun 0.726

tube

noun 0.685

vacuum tube

noun 0.641

tubule

noun 0.622

torpedo tube

noun 0.610

tubing

noun 0.605

steam drum

noun 0.603

tub

noun 0.603

electron tube

noun 0.602

fluorescent tube

noun 0.602

inner tube

noun 0.600

boilermaker

noun 0.592

tube site

noun 0.587

boiler room

noun 0.586

down tube

noun 0.583

water pipe

noun 0.580

boil

noun 0.577

test tube

noun 0.576

dip tube

noun 0.567

steam turbine

noun 0.566

tubeworm

noun 0.557

flue pipe

noun 0.557

pipe

noun 0.553

boiling

noun 0.553

superheater

noun 0.553

connecting tubule

noun 0.553

pressure vessel

noun 0.551

boiler suit

noun 0.551

feedwater heater

noun 0.547

borescope

noun 0.546

pipe roll

noun 0.545

nanotube

noun 0.541

boob tube

noun 0.540

stovepipe

noun 0.539

hot water heater

noun 0.536

water heater

noun 0.536

pipes

noun 0.535

exhaust pipe

noun 0.532

heat exchanger

noun 0.531

tube train

noun 0.530

radiator

noun 0.529

steam locomotive

noun 0.529

boilerplate

noun 0.528

steam engine

noun 0.523

float tube

noun 0.523

steam carriage

noun 0.523

tuber

noun 0.521

oil burner

noun 0.521

phototube

noun 0.519

tubbing

noun 0.515

broiler

noun 0.514

steam hammer

noun 0.513

pipework

noun 0.511

pitot tube

noun 0.510

hot water

noun 0.507

cooling tower

noun 0.507

tuberculosis

noun 0.504

gauge glass

noun 0.503

boiled egg

noun 0.503

thermionic valve

noun 0.502

steamfitter

noun 0.502

pipefitter

noun 0.502