bidirectional vs two-way

bidirectional and two-way both are adjectives.

Word	Noun	Adjective	Verb	Adverb
bidirectional	No	Yes	No	No
two-way	No	Yes	No	No

bidirectional (adjective)	two-way (adjective)
reactive or functioning or allowing movement in two usually opposite directions	operating or permitting operation in either of two opposite directions
	involving two parts or elements
	supported by both sides