ultrasonic vs ultrasound

ultrasonic is not a noun while ultrasound is a noun.

Word	Noun	Adjective	Verb	Adverb
ultrasonic	No	Yes	No	No
ultrasound	Yes	No	No	No

ultrasonic (noun)	ultrasound (noun)
	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

ultrasonic (adjective)	ultrasound (adjective)
having frequencies above those of audible sound