Organ of speech and Voice box

Organ of speech noun - Any of the organs involved in speech production.

Voice box and organ of speech are semantically related. In some cases you can replace phrase "Voice box" with "Organ of speech", this phrases are similar.

Voice box noun - A cartilaginous structure at the top of the trachea; contains elastic vocal cords that are the source of the vocal tone in speech.

Organ of speech and voice box are semantically related. Sometimes you can use "Organ of speech" instead a noun phrase "Voice box".