trough vs saddleback

trough and saddleback both are nouns.

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

trough (noun)	saddleback (noun)
a channel along the eaves or on the roof; collects and carries away rainwater	a double sloping roof with a ridge and gables at each end
a container (usually in a barn or stable) from which cattle or horses feed	a pass or ridge that slopes gently between two peaks (is shaped like a saddle)
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