trough vs public treasury

trough and public treasury both are nouns.

Word	Noun	Adjective	Verb	Adverb
trough	Yes	No	No	No
public treasury	Yes	No	No	No

As nouns, trough and public treasury are synonyms defined as:

Other synonyms of trough include till.

trough (noun)	public treasury (noun)
a channel along the eaves or on the roof; collects and carries away rainwater	a treasury for government funds
a container (usually in a barn or stable) from which cattle or horses feed
a long narrow shallow receptacle
a narrow depression (as in the earth or between ocean waves or in the ocean bed)
a treasury for government funds
a concave shape with an open top