Modifiers matching genus:

• narcotic,
• coniferous,
• succulent,
• woody,
• valuable,
• model,
• common,
• ornamental,
• tropical,
• pathogenic,
• native,
• evergreen,
• diverse,
• large,
• solanaceous,
• important,
• temperate,
• herbaceous,
• leguminous,
• single,
• intestinal,
• bacterial,
• deciduous,
• eukaryotic,
• related,
• alien,
• enteric,
• aquatic,
• poisonous,
• invasive,

Simple categories matching narcotic:

• analgesic,
• genus,
• poison,
• opiate,
• drug,
• antitussive,
• pharmaceutical,
• use,
• medication,
• substance,
• medicine,
• activity,
• agonist,
• plant,
• painkiller,
• agency,
• agent,