What is the word for something that subtracts from a score?

Question

For example: In soccer, if scoring a goal is a point, scoring a goal on your team would be a __________.

In a video game, if getting a kill is a score increaser, comminitting suicide is a _________.

I know there's a word that works right, but I can't think of it.It's a noun, 3-4 syllable, and likely starts with a 'd'.

Answer 1

detriment, deduction

Answer 2

penalty or deduction