measurable vs mensurable

measurable and mensurable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
measurable	No	Yes	No	No
mensurable	No	Yes	No	No

As adjectives, measurable and mensurable are synonyms defined as:

measurable (adjective)	mensurable (adjective)
capable of being measured	capable of being measured
of distinguished importance	having notes of fixed rhythmic value