Ikon and Sonogram

Ikon noun - A visual representation (of an object or scene or person or abstraction) produced on a surface.

Sonogram and ikon are semantically related. In some cases you can replace term "Sonogram" with "Ikon", this nouns are similar.

Sonogram 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.

Ikon and sonogram are semantically related. You can use "Ikon" instead a noun "Sonogram".