Hangul syllable nyeogs

It is one Hangul syllable, so its reading needs word context.

Hangul syllable blocks combine individual letters, called jamo. This one has an opening consonant ㄴ, the vowel ㅕ, and a final two-consonant cluster ㄳ. In Unicode’s decomposed form, those parts are ᄂ + ᅧ + ᆪ.

The final ㄳ cluster changes across syllable boundaries: at a word end or before another consonant, only its first consonant closes the syllable; before a vowel, its second joins the next syllable.

Why are Hangul letters arranged in blocks?

The blocks gather letters into Korean syllables.

Hangul’s earliest recorded creation notice is dated 1443. It describes arranging letters into beginning, middle, and ending positions to make a syllable. A guide explaining the new script followed in 1446.

The script was intended to make Korean easier to write and learn than the Chinese characters then used to write it. The modern spelling standard grew from a 1933 draft and was partly revised in 1988. Some scholars propose a connection to Phags-pa, a square script promulgated in 1269 for languages under Yuan rule; this remains a hypothesis, not proof of descent.