unilateral vs one-sided

unilateral and one-sided both are adjectives.

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

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

unilateral (adjective)	one-sided (adjective)
involving only one part or side	not reversible or capable of having either side out
tracing descent from either the paternal or the maternal line only	involving only one part or side
	favoring one person or side over another