approval vs acceptation

approval and acceptation both are nouns.

Word	Noun	Adjective	Verb	Adverb
approval	Yes	No	No	No
acceptation	Yes	No	No	No

As nouns, acceptation is a hyponym of approval; that is, acceptation is a word with a more specific, narrower meaning than approval:

approval (noun)	acceptation (noun)
the formal act of approving	the act of accepting with approval; favorable reception
a message expressing a favorable opinion	the accepted meaning of a word
a feeling of liking something or someone good	acceptance as true or valid
acceptance as satisfactory