different between tectonics vs stereotomy

English

Ancient Greek ?????? (tékt?n, “builder”).

tectonics (uncountable)

(geology) The study of crustal plates and other large-scale structural features of the Earth.
(architecture) The science and art of assembling, shaping, or ornamenting materials in construction.

From French stéréotomie, from Ancient Greek ??????? (stereós, “solid”) + -????? (-tomía, “-cut”).

stereotomy (uncountable)

(geometry, masonry) The cutting or dissection of solids.
- 1841, Edgar Allan Poe, "The Murders in the Rue Morgue":
  Here your countenance brightened up, and, perceiving your lips move, I could not doubt that you murmured the word ‘stereotomy’, a term very affectedly applied to this species of pavement.

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