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polygraph vs lie detector

lie detector vs polygraph

polygraph and lie detector both are nouns.

Word NounAdjectiveVerbAdverb
polygraph Yes No No No
lie detector Yes No No No
As nouns, lie detector is a hyponym of polygraph; that is, lie detector is a word with a more specific, narrower meaning than polygraph:
  • polygraph: a medical instrument that records several physiological processes simultaneously (e.g., pulse rate and blood pressure and respiration and perspiration)
  • lie detector: a polygraph that records bodily changes sometimes associated with lying
polygraph (noun) lie detector (noun)
a medical instrument that records several physiological processes simultaneously (e.g., pulse rate and blood pressure and respiration and perspiration) a polygraph that records bodily changes sometimes associated with lying
Difference between polygraph and lie detector

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