pusher vs sandal

pusher and sandal both are nouns.

Word	Noun	Adjective	Verb	Adverb
pusher	Yes	No	No	No
sandal	Yes	No	No	No

As nouns, sandal is a hypernym of pusher; that is, sandal is a word with a broader meaning than pusher:

pusher (noun)	sandal (noun)
a small vehicle with four wheels in which a baby or child is pushed around	a shoe consisting of a sole fastened by straps to the foot
a sandal attached to the foot by a thong over the toes
someone who pushes
an unlicensed dealer in illegal drugs
one who intrudes or pushes himself forward