Hangul syllable ggwaet

It is a syllable, not a complete word by itself.

꽽 is a Korean syllable block. It combines an initial consonant, a vowel, and a final consonant; the surrounding Korean word supplies its meaning. Alone, it gives a syllable sound but not enough context to identify a word.

Where does this Hangul block come from?

Hangul was designed to write Korean speech in syllable blocks.

The National Hangeul Museum records Hangul's first notice in the Sejong Shilok, a historical chronicle of King Sejong, in 1443. Hunminjeongeum, an explanatory book about the writing system, was published in 1446. It explains how initial, middle, and final sounds combine into syllables.

꽽 follows that system. Its component letters, called jamo, are ᄁ (initial consonant), ᅫ (vowel), and ᇀ (final consonant). Joined in this order, they form this syllable block.

Why can this Hangul block split apart?

Text normalization can store it as one block or separate jamo.

On a Korean 2-set keyboard, enter the initial consonant, vowel, and final consonant in that order; the input method assembles the block as you type.

NFC stores Hangul as a precomposed syllable when possible; NFD stores the equivalent component letters separately. Both forms encode the same syllable, though software may display the separate letters.