Difference between Digraphs and Diphthongs?

Digraphs and diphthongs are both concepts related to the pronunciation of sounds in language, but they refer to different things.

A digraph is a pair of letters that represent a single sound or phoneme. The two letters in the digraph work together to create a sound that is different from the individual sounds of the letters themselves. For example, in English, the “th” in “thin” is a digraph that represents a single sound that is not the same as the “t” or the “h” sounds.

A diphthong, on the other hand, is a single vowel sound that is made up of two different vowel sounds that are pronounced together in a single syllable. This can happen when a word contains two adjacent vowels in the same syllable. For example, in the English word “coin,” the “oi” is a diphthong that combines the sounds of “o” and “i.”

To summarize, digraphs involve two letters that represent a single sound, while diphthongs involve a single sound that is made up of two different vowel sounds.