Park, School, Garden, Kitten- Kitten is an animal, Other are places
Shoe, Shock, Hen, Sandals- Hen is a bird, Rest are things
Sparrow, Crow, Ant, Eagle- Ant is an insect, Rest are Birds
Mouse, House, Camel, Sheep- House is a place, Others are Animals
Vegetable, Fruits, Friends, Snacks- Friends are persons, Others are eatables