Corm and Pip

Corm noun - Solid swollen underground bulb-shaped stem or stem base and serving as a reproductive structure.

Pip and corm are semantically related. In some cases you can use "Pip" instead a noun "Corm".

Pip noun - A small area that is different (as in color) from the main part.

Corm and pip are semantically related. Sometimes you can replace term "Corm" with "Pip", this nouns are similar.