A long time in the making

All words relate to the concept of 'A long time in the making'

Think about what these words have in common

The Spangram is a longer word (13 letters) that ties the theme together

Theme words range from 4 to 6 letters long

Each theme word starts with a different letter

The Spangram might be a compound or phrase (13 letters total)

One word: A______ (4 letters, starts with 'A')

Another word: B______ (5 letters)

Also look for: G______ (5 letters)