contemplation vs reflexion

contemplation and reflexion both are nouns.

Word	Noun	Adjective	Verb	Adverb
contemplation	Yes	No	No	No
reflexion	Yes	No	No	No

As nouns, contemplation and reflexion are synonyms defined as:

Other synonyms of contemplation include musing, reflection, rumination, thoughtfulness.

contemplation (noun)	reflexion (noun)
a long and thoughtful observation	the image of something as reflected by a mirror (or other reflective material)
a calm, lengthy, intent consideration	the ability to reflect beams or rays
	a likeness in which left and right are reversed
	a calm, lengthy, intent consideration
	a remark expressing careful consideration
	expression without words
	the phenomenon of a propagating wave (light or sound) being thrown back from a surface