prenatal diagnosis vs ultrasound

prenatal diagnosis and ultrasound both are nouns.

Word	Noun	Adjective	Verb	Adverb
prenatal diagnosis	Yes	No	No	No
ultrasound	Yes	No	No	No

As nouns, ultrasound is a hyponym of prenatal diagnosis; that is, ultrasound is a word with a more specific, narrower meaning than prenatal diagnosis:

prenatal diagnosis: any of the diagnostic procedures used to determine whether a fetus has a genetic abnormality
ultrasound: using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs

Other hyponyms of prenatal diagnosis include echography, sonography, ultrasonography, amnio, amniocentesis, fetoscopy, foetoscopy.

prenatal diagnosis (noun)	ultrasound (noun)
any of the diagnostic procedures used to determine whether a fetus has a genetic abnormality	using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs
	very high frequency sound; used in ultrasonography

prenatal diagnosis vs ultrasound

prenatal diagnosis and ultrasound both are nouns.

Words related to "prenatal diagnosis"

Words related to "ultrasound"