Bean plant and Shell bean

Bean plant noun - Any of various leguminous plants grown for their edible seeds and pods.

Shell bean and bean plant are semantically related. In some cases you can replace phrase "Shell bean" with "Bean plant", this phrases are similar.

Shell bean noun - A bean plant grown primarily for its edible seed rather than its pod.

Bean plant and shell bean are semantically related. You can use "Bean plant" instead a noun phrase "Shell bean".