Difference between to go out and going on an outing

[Michaella]

Test No. incompl/inter-21 "The two Butter Frogs", question 1

A long, long time ago there were two frogs who thought it would be a good idea to ..........

(a) go on an outing
(b) go outing
(c) go out
(d) out go

Test No. incompl/inter-21 "The two Butter Frogs", answer 1

A long, long time ago there were two frogs who thought it would be a good idea to go on an outing.

Correct answer: (a) go on an outing

Your answer was: incorrect
A long, long time ago there were two frogs who thought it would be a good idea to go out.
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Hello,
could you please expain the expression ,, go on an outing,, to me?
Thank you!
Michaella

[Torsten]

Michaela,

If go on an outing, you take a trip or a journey or you organize a picnic or barbeque. You can also go out which means you simply leave the house with no specific purpose. You may go to a restaurant or discotheque or any place you like.
So, the difference between going out and going for an outing is that the latter requires some planning and preparation whereas the former is just a spontaneous act.

The two frogs in our stories clearly are going for on an outing - they want to take an adventure and experience new things.
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Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary

[Candy S]

Excuse me ! You told the diffiences between "go on an outing" and " go out" was the preparatin. But I didn`t see the preparation of the tro frogs in the question