Looking on the internet deeply has found these results:

approval is the most popular phrase on the web.

APPROBATION 11,080,000 results on the web	approval 1363,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
(stem of approbātiō). ... The word “provocative” is often a term of approbation; here it is clearly ... 1400; Middle English (< Middle French) < Latin approbātiōn 8 janvier 1961 Approbation de l'autodétermination en Algérie Le référendum proposé par le Général de Gaulle visant à statuer sur l'autodétermination des ... Approbation is similar in meaning to "approval," and it is also very close to " approval" etymologically. Both words trace back to the Latin verb approbare, which ... Action d'approuver quelqu'un, quelque chose ; consentement donné : Donner son approbation à un projet. Synonyme de adhésion, en droit international. 1350	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

APPROBATION

11,080,000 results on the web

approval

1363,000,000 results on the web

More popular!

(stem of approbātiō). ... The word “provocative” is often a term of approbation; here it is clearly ...
1400; Middle English (< Middle French) < Latin approbātiōn
8 janvier 1961 Approbation de l'autodétermination en Algérie Le référendum proposé par le Général de Gaulle visant à statuer sur l'autodétermination des ...
Approbation is similar in meaning to "approval," and it is also very close to " approval" etymologically. Both words trace back to the Latin verb approbare, which ...
Action d'approuver quelqu'un, quelque chose ; consentement donné : Donner son approbation à un projet. Synonyme de adhésion, en droit international.
1350

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.