saddleback vs trough

saddleback and trough both are nouns.

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

saddleback (noun)	trough (noun)
a double sloping roof with a ridge and gables at each end	a channel along the eaves or on the roof; collects and carries away rainwater
a pass or ridge that slopes gently between two peaks (is shaped like a saddle)	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