treasury vs trough

treasury and trough both are nouns.

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

As nouns, trough is a hyponym of treasury; that is, trough is a word with a more specific, narrower meaning than treasury:

Other hyponyms of treasury include public treasury, till, bursary, subtreasury, fisc.

treasury (noun)	trough (noun)
a depository (a room or building) where wealth and precious objects can be kept safely	a channel along the eaves or on the roof; collects and carries away rainwater
the government department responsible for collecting and managing and spending public revenues	a container (usually in a barn or stable) from which cattle or horses feed
the funds of a government or institution or individual	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