Coat-of-mail shell and Chiton

Coat-of-mail shell noun - Primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous plates.

Chiton is a synonym for coat-of-mail shell. In some cases you can use "Chiton" instead a noun phrase "Coat-of-mail shell".

Chiton noun - Primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous plates.

Coat-of-mail shell is a synonym for chiton. You can use "Coat-of-mail shell" instead a noun "Chiton".