Turn it up a notch

All words relate to the concept of 'Turn it up a notch'

Think about what these words have in common

The Spangram is a longer word (14 letters) that ties the theme together

Theme words range from 4 to 7 letters long

Several words share similar endings

Each theme word starts with a different letter

One word: F______ (4 letters, starts with 'F')

Another word: K______ (4 letters)

Also look for: O______ (5 letters)