contraption vs gadget

contraption and gadget both are nouns.

Word	Noun	Adjective	Verb	Adverb
contraption	Yes	No	No	No
gadget	Yes	No	No	No

As nouns, contraption and gadget are synonyms defined as:

contraption and gadget: a device or control that is very useful for a particular job

Other synonyms of contraption include appliance, contrivance, convenience, gismo, gizmo, widget.

contraption (noun)	gadget (noun)
a device or control that is very useful for a particular job	a device or control that is very useful for a particular job