skid vs sloping trough

skid and sloping trough both are nouns.

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

skid (noun)	sloping trough (noun)
an unexpected slide	sloping channel through which things can descend
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

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