Knock, knock!

All words relate to the concept of 'Knock, knock!'

Think about what these words have in common

Look for the Spangram - it often reveals the theme

Theme words range from 4 to 9 letters long

Each theme word starts with a different letter

The Spangram might be a compound or phrase (7 letters total)

One word: D______ (7 letters, starts with 'D')

Another word: E______ (8 letters)

Also look for: G______ (4 letters)