Difference between Periwinkle and Madagascar Periwinkle

PERIWINKLE vs MADAGASCAR PERIWINKLE: NOUN

A color with bluish and purplish hues, somewhat light.
A mollusk of genus Littorina.
Any small marine gastropod shell of the genus Littorina. The common European species (Littorina littorea), in Europe extensively used as food, has recently become naturalized abundantly on the American coast. See littorina.
A trailing herb of the genus Vinca.
A plant of the genus Vinca, most often one or other of the familiar garden species, v. major, the larger, and v. minor, the lesser periwinkle.
One of several large whelks or conch-shells, as Busycon (Fulgur) carica, Sycotypus canaliculatus, and various species of Purpura, as P. ostrina, P. lapillus, P. floridana: commonly called winkles or wrinkles. They are pests in the oyster-beds.
A kind of seasnail; any member of the family Littorinidæ, and especially of the genus Littorina. See cuts under Littorina and Littorinidæ.
In Australia, a name given to the gastropod Turbo undulatus.
Chiefly trailing poisonous plants with blue flowers
Commonly cultivated Old World woody herb having large pinkish to red flowers
Small edible marine snail; steamed in wine or baked
Edible marine gastropod

Violet, Lavender, Marsh marigold, Fuchsia, Mauve, Vinca, Vinca rosea, Rose periwinkle, Red periwinkle, Cayenne jasmine, Catharanthus roseus, Cape periwinkle, Old maid, Winkle, Madagascar periwinkle

Bromelain, Curcuma, Amygdalin, Bearberry, Ricinus communis, Colchicum, Ageratum, Vinca rosea, Rose periwinkle, Red periwinkle, Cayenne jasmine, Catharanthus roseus, Cape periwinkle, Old maid, Periwinkle

Swamp milkweed, Skunk cabbage, Ranunculus, Hydrangea, Ajuga, Kangaroo paw, Trout lily, Dusty miller, Violet, Lavender, Marsh marigold, Fuchsia, Mauve, Vinca, Winkle

Feverfew, Rhizomatous, Vinca minor, Comfrey, Officinalis, Nigella, Pueraria, Bromelain, Curcuma, Amygdalin, Bearberry, Ricinus communis, Colchicum, Ageratum, Periwinkle

Historic plantings include periwinkle ground cover, daffodils, and peonies.
Periwinkle: Our frost, it covers like a blanket.
Periwinkle: The tree should be our top priority.
Little Unicorn Polka Dot Muslin Quilt in Periwinkle.
Historic plantings include daylilies and periwinkle ground cover.
Historic plantings include periwinkle, yucca, and cedar trees.
First figure itself, jingle, periwinkle, scallop full moonlight.
Introduction to Periwinkle Plant Cultivation When it comes to Periwinkle plant description, it is a perennial.
She also wears a sky blue skirt with a periwinkle belt, periwinkle tights combined with white socks, and gray velcro sneakers with turquoise trim.
Periwinkle Way and Lindgren Boulevard: routed east on Periwinkle.