manger vs feed bunk

manger and feed bunk both are nouns.

Word	Noun	Adjective	Verb	Adverb
manger	Yes	No	No	No
feed bunk	Yes	No	No	No

As nouns, feed bunk is a hyponym of manger; that is, feed bunk is a word with a more specific, narrower meaning than manger:

manger: a container (usually in a barn or stable) from which cattle or horses feed
feed bunk: a long trough for feeding cattle

Other hyponyms of manger include bunk.

manger (noun)	feed bunk (noun)
a container (usually in a barn or stable) from which cattle or horses feed	a long trough for feeding cattle