Nightshade and Solanum dulcamara

Nightshade noun - Any of numerous shrubs or herbs or vines of the genus Solanum; most are poisonous though many bear edible fruit.

Solanum dulcamara and nightshade are semantically related. In some cases you can replace phrase "Solanum dulcamara" with "Nightshade", this terms are similar.

Solanum dulcamara noun - Poisonous perennial Old World vine having violet flowers and oval coral-red berries; widespread weed in North America.

Nightshade and Solanum dulcamara are semantically related. You can use "Nightshade" instead a noun phrase "Solanum dulcamara".