Fluoroscope and X-ray machine

Fluoroscope noun - An X-ray machine that combines an X-ray source and a fluorescent screen to enable direct observation.

X-ray machine and fluoroscope are semantically related. In some cases you can use "X-ray machine" instead a noun "Fluoroscope".

X-ray machine noun - An apparatus that provides a source of X rays.

Fluoroscope and X-ray machine are semantically related. Sometimes you can replace term "Fluoroscope" with "X-ray machine", this terms are similar.