What is an example of a phonogram?

A phonogram is a letter or group of letters representing a sound or sounds in a language, often associated with its spelling patterns in words. The combination "ack" found in the word "back" serves as a perfect example of a phonogram because it represents a specific sound made by the letters together. This cluster can be found in various words, demonstrating its role in spelling and pronunciation.

In contrast, a single letter like "a" represents an individual sound but does not constitute a phonogram since it does not demonstrate the interaction of multiple letters to form a sound pattern. Similarly, the sound made by a single letter does not capture the essence of a phonogram, which involves a grouping of letters. A vowel sound by itself also does not fit the definition of a phonogram because it does not include the contextual significance of combining letters to indicate pronunciation, which is essential in phonograms.