Coarse material

All words relate to the concept of 'Coarse material'

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

Watch for words starting with B, L, P

The Spangram might be a compound or phrase (10 letters total)

One word: B______ (4 letters, starts with 'B')

Another word: L______ (6 letters)

Also look for: P______ (6 letters)