"Traveling is important."

Translation: 여행을 하는 것은 중요해요.

[raemation]

Why 여행하기는 instead of 여행하는 것이?

[SabianF]

여행 is a noun, by itself, but you need 하는거 for words that are inherently verbs, to make it into a noun.

Example:
행복 = Happiness
행복해 = to be happy
행복하는거 = (the action of) being happy (followed by a description)

걷다 = to walk
걷는거 = (the action of) walking (noun of verb)

저는 행복해
I am happy

행복하는것은 좋아요
Being happy is good

저는 집에 걸어요
I walk home

집에 걷는것을 힘들어요
Walking home is tiring

[Le_choc]

But isn't 행복 also a noun?

[Staszek456]

행복 - happiness, 행복하기 - being happy. You are right but there is a slight difference anyway

[wintertriangles]

Those are the same haha

[ShaileeKap]

Please refer to this lesson by TTMIK. https://talktomeinkorean.com/curriculum/level-3-korean-grammar/lessons/level-3-lesson-10/

[seonni]

Open on web and read tips and notes of gerund, it's all there.

[Al-Asmawi]

In another sentence we have :

Traveling is tiring. = 여행은 피곤해요.

but here it doesn't accept 여행은 중요해요.

[victoria_g06]

What is the difference between 중요해요 and 중요합니다?

[sari699125]

Actually the meaning is the same, just 중요합니다 more formal than 중요해요

[ladydessy]

The first is polite form, the latter is formal form. Essentially they are/ mean exactly the same thing.

[the_crait]

The conjugations (way the verb ends) are different depending on to whom you are speaking. One has more formality than the other. Do you want to guess which one?

[noviaprims]

중요합니다 is more polite

[EEdLoh]

The meaning is the same. They're used depending on who you're talking to. 중요해요 is Polite (strangers and people older than you) and 중합니다 is Formal (your boss/teacher)

[Oriiel]

It's just a polite matter

[Amallia14]

It is the same. 중요합니다 is the most polite form between two of them

[ShaileeKap]

Is the sentence 여행은 중여해요 incorrect?