Climbing nightshade and Nightshade

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

Nightshade and climbing nightshade are semantically related. In some cases you can use "Nightshade" instead a noun phrase "Climbing nightshade".

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

Climbing nightshade and nightshade are semantically related. Sometimes you can replace phrase "Climbing nightshade" with "Nightshade", this terms are similar.