different between drivetrain vs subframe

English

From drive +? train.

drivetrain (plural drivetrains)

(mechanical engineering) The mechanical parts of the powertrain, the gears and shafts, that connect the engine to the wheels in a vehicle.
Synonym: powertrain

sub- +? frame

subframe (plural subframes)

A subsidiary frame (chunk of data).
A structural component of a vehicle, such as an automobile or aircraft, that uses a discrete, separate structure within a larger body-on-frame or unit body to carry certain components, such as the engine, drivetrain, or suspension.
(Internet) One of the HTML frames that make up a frameset.
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  Specify the dimensions of your main frame and subframes and this online utility will create them for you.

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