flection vs flexure

flection and flexure both are nouns.

Word	Noun	Adjective	Verb	Adverb
flection	Yes	No	No	No
flexure	Yes	No	No	No

As nouns, flection and flexure are synonyms defined as:

Other synonyms of flection include flexion.

flection (noun)	flexure (noun)
deviation from a straight or normal course	act of bending a joint; especially a joint between the bones of a limb so that the angle between them is decreased
the state of being flexed (as of a joint)	an angular or rounded shape made by folding
	the state of being flexed (as of a joint)