one-sided vs slanted

one-sided and slanted both are adjectives.

Word	Noun	Adjective	Verb	Adverb
one-sided	No	Yes	No	No
slanted	No	Yes	No	No

As adjectives, one-sided and slanted are synonyms defined as:

Other synonyms of one-sided include biased, colored, coloured.

one-sided (adjective)	slanted (adjective)
not reversible or capable of having either side out	having an oblique or slanted direction
involving only one part or side	favoring one person or side over another
favoring one person or side over another