Endocarp and Pericarp

Endocarp noun - The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.

Pericarp and endocarp are semantically related. In some cases you can use "Pericarp" instead a noun "Endocarp".

Pericarp noun - The ripened and variously modified walls of a plant ovary.

Endocarp and pericarp are semantically related. Sometimes you can replace term "Endocarp" with "Pericarp", this nouns are similar.