Aril and Plastron

Aril noun - Fleshy and usually brightly colored cover of some seeds that develops from the ovule stalk and partially or entirely envelopes the seed.

Plastron and aril are semantically related. In some cases you can use "Plastron" instead a noun "Aril".

Plastron noun - A metal breastplate that was worn under a coat of mail.

Aril and plastron are semantically related. You can use "Aril" instead a noun "Plastron".