sloping trough vs skid

sloping trough and skid both are nouns.

Word	Noun	Adjective	Verb	Adverb
sloping trough	Yes	No	No	No
skid	Yes	No	Yes	No

sloping trough (noun)	skid (noun)
sloping channel through which things can descend	an unexpected slide
	one of a pair of planks used to make a track for rolling or sliding objects
	a restraint provided when the brake linings are moved hydraulically against the brake drum to retard the wheel's rotation

sloping trough (verb)	skid (verb)
	move obliquely or sideways, usually in an uncontrolled manner
	apply a brake or skid to
	elevate onto skids
	slide without control