sonogram vs echogram

sonogram and echogram both are nouns.

Word	Noun	Adjective	Verb	Adverb
sonogram	Yes	No	No	No
echogram	Yes	No	No	No

As nouns, sonogram and echogram are synonyms defined as:

sonogram and echogram: an image of a structure that is produced by ultrasonography (reflections of high-frequency sound waves); used to observe fetal growth or to study bodily organs

sonogram (noun)	echogram (noun)
an image of a structure that is produced by ultrasonography (reflections of high-frequency sound waves); used to observe fetal growth or to study bodily organs	an image of a structure that is produced by ultrasonography (reflections of high-frequency sound waves); used to observe fetal growth or to study bodily organs