English: phonics: digraph vs blend
Self-tutoring about English sounds: the tutor shares about digraphs and blends.
A digraph is two consonants that combine to make a single sound not recognizable from the combining ones: th and ch are examples.
A blend is two consonant sounds that cooperate but whose separate sounds are preserved.
The word “child” has a digraph at the beginning and a blend at the end.
Source:
Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.