Modifiers matching spider:

• larger,
• large,
• harmless,
• venomous,
• smaller,
• poisonous,
• primitive,

Simple categories matching venomous:

• serpent,
• thing,
• beast,
• animal,
• snake,
• reptile,
• creature,
• organism,
• critter,
• scorpion,
• snail,
• spider,
• insect,
• pet,
• fish,
• arthropod,
• invertebrate,