both contain pets

both are adults/help you learn/care for you

both protect you/for safety

You wear a ring, and you play with a hula hoop/ A ring is small and a hula hoop is big. A ring is made of metal and a hula hoop is made of plastic

peanut butter is from peanuts and cheese is from milk/cream/cows, you spread peanut butter with a knife and you slice cheese, etc

you pound on/hit both of them

The both live in the ocean

washing machines clean clothes and dishwashers clean dishes

A sleeping bag is for sleeping in, and a coat is for wearing.

You can climb them both

cows give us milk and zebras don't, cows are on farms and zebras are in zoos/jungle, etc

seatbelts protect you in a car and helmets protect you on a bike, seatbelts protect your whole body and helmets protect your head

fish tanks have water/fish tanks hold fish and dog kennels hold dogs, etc