What does the term "thought-action fusion" mean when used to describe the obsessional thinking pattern of persons with obsessive-compulsive disorder?

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Thought-action fusion in OCD involves equating one's thoughts with the specific activity represented by those thoughts. It results in a strong belief that thinking about a negative outcome increases the likelihood of that outcome occurring, leading to compulsive behaviors aimed at preventing the feared outcome. For example, a person with OCD who fears they will harm someone might feel that simply having the thought puts them at risk of acting on it, thus they may avoid being around potential victims or check repeatedly to ensure they haven't caused harm.

What Does the Term "Thought-Action Fusion" Mean When Used to Describe