counterclockwise vs contraclockwise

counterclockwise and contraclockwise both are adjectives.

Word	Noun	Adjective	Verb	Adverb
counterclockwise	No	Yes	No	Yes
contraclockwise	No	Yes	No	No

As adjectives, counterclockwise and contraclockwise are synonyms defined as:

counterclockwise and contraclockwise: in the direction opposite to the rotation of the hands of a clock

Other synonyms of counterclockwise include anticlockwise.

counterclockwise (adjective)	contraclockwise (adjective)
in the direction opposite to the rotation of the hands of a clock	in the direction opposite to the rotation of the hands of a clock

counterclockwise (adverb)	contraclockwise (adverb)
in a direction opposite to the direction in which the hands of a clock move