Effigy - A sculpture or model of a person.
Secular - Denoting attitudes, activities, or other things that have no religious or spiritual basis.
Polytheistic - The belief in more than one God.
I hope these definitions helped!
Answer:
The first is an onion dome. The second is a barrel vault. The third is a rotunda dome. The fourth is a corbel arch.
Figure-ground Reversal should be the answer lmk if i’m wrong