diner vs feeder

diner and feeder both are nouns.

Word	Noun	Adjective	Verb	Adverb
diner	Yes	No	No	No
feeder	Yes	No	No	No

As nouns, feeder is a hypernym of diner; that is, feeder is a word with a broader meaning than diner:

Other hypernyms of diner include eater.

diner (noun)	feeder (noun)
a passenger car where food is served in transit	an animal being fattened or suitable for fattening
a restaurant that resembles a dining car	an animal that feeds on a particular source of food
a person eating a meal (especially in a restaurant)	a machine that automatically provides a supply of some material
	an outdoor device that supplies food for wild birds
	a branch that flows into the main stream
	someone who consumes food for nourishment