One word for 'a person who does not believe in God' (atheist)

The same question, asked 2 times: 14 Jul 2023 S4*, 24 Sep 2024 S1. Every wording below, oldest first.

Try each one first, then open its answer.

Question 1
14 Jul 2023 S4
77 $Select the option that can be used as a one-word substitute for the given group of words. A person who does not believe that God or Gods exist.$
Tap an option to check your answer.
Question 2
24 Sep 2024 S1
85 $Select the option that can be used as a one-word substitute for the given group of words. A person who does not believe in God$
Tap an option to check your answer.