Category Nuances for periwinkle:

• traditional,
• low,
• nonnative,
• toxic,
• small,
• herbivorous,
• perennial,
• marine,
• herbaceous,
• woody,
• ornamental,
• intertidal,
• invasive,
• tolerant,
• animal,
• tropical,
• smaller,
• tender,
• familiar,
• weather,
• mobile,

Simple Categories for periwinkle:

• plant,
• mollusc,
• shrub,
• gastropod,
• food,
• annual,
• snail,
• ornamental,
• shellfish,
• organism,
• host,
• animal,