Phaseolus lunatus and Shell bean

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

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

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

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