Illustration     •     Transformation
Illustration goes back to the Latin illustrare, to 'make bright,' from the same base as produced lumen (source of illuminate) and lux 'light.' Originally it meant literally 'throw light on,' but eventually came to mean 'elucidate' and, in the 17th century, 'exemplify' and 'add pictures to.' 
​Transformation is a thorough or dramatic change
​in form or appearance. c. 1400, from Old French transformation and directly from Church Latin transformationem "change of shape."

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