coterminous vs conterminous

coterminous and conterminous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
coterminous	No	Yes	No	No
conterminous	No	Yes	No	No

As adjectives, coterminous and conterminous are synonyms defined as:

coterminous and conterminous: being of equal extent or scope or duration

Other synonyms of coterminous include coextensive.

coterminous (adjective)	conterminous (adjective)
being of equal extent or scope or duration	being of equal extent or scope or duration
	connecting without a break; within a common boundary
	having a common boundary or edge; abutting; touching