slideway vs sloping trough

slideway and sloping trough both are nouns.

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

As nouns, slideway and sloping trough are synonyms defined as:

slideway and sloping trough: sloping channel through which things can descend

Other synonyms of slideway include chute, slide.

slideway (noun)	sloping trough (noun)
sloping channel through which things can descend	sloping channel through which things can descend