Radiograph as a noun is an image, often a photographic negative, produced by radiation other than normal light; especially an x-ray photograph while Shadowgraph as a noun is an optical technique of visualizing patterns of fluid flow by using differences in refractive index
Part of speech: noun
Definition: an image, often a photographic negative, produced by radiation other than normal light; especially an X-ray photograph
Part of speech: noun
Definition: An optical technique of visualizing patterns of fluid flow by using differences in refractive indexAn X-ray image.
We hope you now know whether to use Radiograph or Shadowgraph in your sentence.