Contrivance vs Duplicity - What's the difference?

As nouns the difference between contrivance and duplicity

is that contrivance is a (mechanical) device to perform a certain task while duplicity is intentional deceptiveness; double-dealing.

(en noun)

a (mechanical) device to perform a certain task

a means, such as an elaborate plan or strategy, to accomplish a certain objective

* 2005 , .

And along with each of these go their images, not the things themselves, — they too have come about by godlike contrivance .

something overly artful or artificial

* *

Intentional deceptiveness; double-dealing.