Technological component
fundamental component of a machine or a tool, part of the machinery and contributing to the function of the machine, not of the esthetics
ORFS
magnetic core
point frog
brake shoe
quill drive
drainage channel
spare part
track switch
plowshare
sensor
tire
software component
bezel
printed circuit board
running gear
fireplace
exhaust port
Crossbow nut
wheel hub assembly
connecting rod
Tipped tool
orphaned technology
optical waveguide
safety
gun barrel
knob
rim
firebox
hubcap
hubcap
construction brick
sleeve
hull
propelling nozzle
S-cam
tensioner
bicycle tire
car wheel
car wheel
boom
machine element
muzzle brake
spoke
spoke
muzzle device
buffer
bow limbs
cylinder block