different between advisability vs recommendation

English

advisable +? -ity

advisability (usually uncountable, plural advisabilities)

(uncountable) The quality of being advisable or prudent; advisableness.
- 1929, Robert Dean Frisbee, The Book of Puka-Puka (republished by Eland, 2019; p. 36f):
  Viggo assumed a cheery offhand manner, but I could see that he was worried, doubtful as to the advisability of leaving me here alone.
(countable) An instance of advisability; a consideration in determining overall advisability.

From Middle English recommendacion, from Anglo-Norman recomendacion, from Medieval Latin recommendatio.

recommendation (countable and uncountable, plural recommendations)

An act of recommending.
That which is recommended.
A commendation or endorsement.
Your next employer may require a recommendation.
A suggestion or proposal about the best course of action (with adpositions including "about" for the context and "to" for the course of action)
He made a recommendation about what food to order.
We followed the recommendation to order sushi.

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