It's way over your head

All words relate to the concept of 'It's way over your head'

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

Several words share similar endings

Each theme word starts with a different letter

One word: A______ (8 letters, starts with 'A')

Another word: C______ (5 letters)

Also look for: G______ (6 letters)