In this anwser <https://japanese.stackexchange.com/a/39042/55243> it says that
の after adjectives is interchangable with こと/もの. It gives an example:

> の after an adjective is mainly もの, but it can be こと in some contexts:

> 大きいのを着た。 = 大きいものを着た。  
>  I wore the big (bigger) one.  
>  大きいのはいいことだ。 = 大きいことはいいことだ。  
>  Being big is good.

But when would one use adjective+の over adjective+こと/もの and vice-versa? Like
for example in

> 「町に人が多い のは 当然だ。車が多い のも 当然だ。」  
>  "It is natural that there are a lot of people in the town. It is also
> natural that there are a lot of cars in the town." .

what happens if you replace 多いの with 多いこと?
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2022-12-31T10:00:23.793
97871
2022-12-31T20:48:33.337
2022-12-31T10:13:33.717
55243
55243
question
particle-の adjectives nominalization
When to use adjective+の over adjective+こと/もの?
もの means ”object”, こと means ”situation”. But の means both ”object” and
”situation”.

Therefore, for example, if 大きいの means ”big one(object)”, you can replace it
with 大きいもの, but it means merely ”big(situation)”, you have to replace it with
大きいこと.

In your example, 町に人が多い is the situation. So it is good to replace with
町に人が多いこと.

If you replace it correctly, there is little difference between the two
expressions. But I think it is more natural that you use の than もの or こと in
many cases.
CC BY-SA 4.0
2022-12-31T20:48:33.337
97876
2022-12-31T20:48:33.337
55322
97871
answer