medical instrument vs polygraph

polygraph vs medical instrument

medical instrument and polygraph both are nouns.

Word	Noun	Adjective	Verb	Adverb
medical instrument	Yes	No	No	No
polygraph	Yes	No	No	No

As nouns, polygraph is a hyponym of medical instrument; that is, polygraph is a word with a more specific, narrower meaning than medical instrument:

medical instrument: instrument used in the practice of medicine
polygraph: a medical instrument that records several physiological processes simultaneously (e.g., pulse rate and blood pressure and respiration and perspiration)

Other hyponyms of medical instrument include ballistocardiograph, cardiograph, bronchoscope, cardiograph, electrocardiograph, dialysis machine, dialyzer, diathermy machine, electroencephalograph, electromyograph, endoscope, fiberscope, keratoscope, laryngoscope, ophthalmoscope, auriscope, auroscope, otoscope, rhinoscope, speculum, stethoscope, surgical instrument, syringe, thermograph, ultrasound scanner, scintigraph, scintiscanner, diaphanoscope, encephalograph, cobalt machine, surgical suction pump, surgical vacuum pump.

medical instrument (noun)	polygraph (noun)
instrument used in the practice of medicine	a medical instrument that records several physiological processes simultaneously (e.g., pulse rate and blood pressure and respiration and perspiration)

Difference between medical instrument and polygraph

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