reflexion vs rumination

reflexion and rumination both are nouns.

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

As nouns, reflexion and rumination are synonyms defined as:

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

reflexion (noun)	rumination (noun)
the image of something as reflected by a mirror (or other reflective material)	regurgitation of small amounts of food; seen in some infants after feeding
the ability to reflect beams or rays	(of ruminants) chewing (the cud)
a likeness in which left and right are reversed	a calm, lengthy, intent consideration
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