public treasury vs trough

public treasury and trough both are nouns.

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

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

Other synonyms of public treasury include till.

public treasury (noun)	trough (noun)
a treasury for government funds	a channel along the eaves or on the roof; collects and carries away rainwater
	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