Legume and Soya bean

Legume noun - An erect or climbing bean or pea plant of the family Leguminosae.

Soya bean and legume are semantically related. In some cases you can replace phrase "Soya bean" with "Legume", this terms are similar.

Nearby Word: leguminous

Soya bean noun - Erect bushy hairy annual herb having trifoliate leaves and purple to pink flowers; extensively cultivated for food and forage and soil improvement but especially for its nutritious oil-rich seeds; native to Asia.

Legume and soya bean are semantically related. You can use "Legume" instead a noun phrase "Soya bean".