Sieva bean and Shell bean

Sieva bean noun - Bush bean plant cultivated especially in southern United States having small flat edible seeds.

Shell bean and sieva bean are semantically related. In some cases you can use "Shell bean" instead a noun phrase "Sieva bean".

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

Sieva bean and shell bean are semantically related. Sometimes you can replace phrase "Sieva bean" with "Shell bean", this phrases are similar.