As nouns the difference between letters and grapheme
is that letters is while grapheme is a fundamental unit of a writing system, corresponding to (for example) letters in the english alphabet or jamo in korean hangeul.
As a verb letters
is (letter).
letters
English
Noun
(head)
Verb
(head)
(letter)
Statistics
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grapheme
English
Noun
(
en noun)
A fundamental unit of a writing system, corresponding to (for example) letters in the English alphabet or jamo in Korean Hangeul.
In alphabetic writing, the shortest group of letters composing a phoneme.