extolment vs approval

extolment and approval both are nouns.

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

As nouns, approval is a hypernym of extolment; that is, approval is a word with a broader meaning than extolment:

Other hypernyms of extolment include commendation.

extolment (noun)	approval (noun)
an expression of approval and commendation	the formal act of approving
	a message expressing a favorable opinion
	a feeling of liking something or someone good
	acceptance as satisfactory