both protect you/for safety

popsicles are frozen and lollipops are not frozen

both are for holding/carrying things, both have handles or straps or pockets

both have small pieces, both come in a box, neither is fun to pick up if you spill

teachers work at school and mothers work at home, etc

both have bristles or pokey things sticking out

For cooking/heating something, in kitchen, etc.

clouds are in the sky and marshmallows are in a bag, marshmallows are for eating and clouds are for rain, clouds are natural and marshmallows are man made, etc

They both keep you warm/have zippers/made of cloth

both are adults/help you learn/care for you

You hit nails with a hammer and drums with drum sticks/nails are for building and drums are for music

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

both clean things/appliances/use detergent