wind deflection vs deflexion

wind deflection and deflexion both are nouns.

Word	Noun	Adjective	Verb	Adverb
wind deflection	Yes	No	No	No
deflexion	Yes	No	No	No

As nouns, deflexion is a hypernym of wind deflection; that is, deflexion is a word with a broader meaning than wind deflection:

wind deflection: the deflection of a projectile resulting from the effects of wind
deflexion: the property of being bent or deflected

Other hypernyms of wind deflection include bending, deflection.

wind deflection (noun)	deflexion (noun)
the deflection of a projectile resulting from the effects of wind	a turning aside (of your course or attention or concern)
	the property of being bent or deflected
	the amount by which a propagating wave is bent
	the movement of the pointer or pen of a measuring instrument from its zero position