hopper vs hop-picker

hopper and hop-picker both are nouns.

Word	Noun	Adjective	Verb	Adverb
hopper	Yes	No	No	No
hop-picker	Yes	No	No	No

As nouns, hopper and hop-picker are synonyms defined as:

hopper (noun)	hop-picker (noun)
(baseball) a hit that travels along the ground	a machine used for picking hops
terrestrial plant-eating insect with hind legs adapted for leaping
funnel-shaped receptacle; contents pass by gravity into a receptacle below
a machine used for picking hops
someone who hops